Deutsch
EnglishVehicle Care for your Chevrolet Silverado 1500 2018-2025
Vehicle Care
333
special handling may apply. See
perchlorate.
Appearance Care
General Information
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 406
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
For service and parts needs, visit your
dealer. You will receive genuine GM parts
and GM-trained and supported service
people.
Accessories and Modifications
Adding non-dealer accessories or making
modifications to the vehicle can affect
vehicle performance and safety, including
such things as airbags, braking, stability,
ride and handling, emissions systems,
Genuine GM parts have one of these marks:
aerodynamics, durability, Driver Assistance
Systems, and electronic systems like antilock
brakes, traction control, and stability control.
These accessories or modifications could
even cause malfunction or damage not
covered by the vehicle warranty.
Caution
When adding accessories or other
equipment after the purchase of your
vehicle, ensure you are not exceeding the
vehicle axle weight ratings or overall
weight ratings. Overloading the vehicle
may cause damage. Repairs would not be
covered by the vehicle warranty. Do not
overload the vehicle. See Vehicle Load
Limits 0 204 and Trailer Towing 0 303 for
those specific weight ratings.
California Perchlorate Materials
Requirements
Certain types of automotive applications,
such as airbag initiators, seat belt
pretensioners, and lithium batteries
contained in electronic keys, may contain
perchlorate materials. Perchlorate Material –
334
Vehicle Care
Damage to suspension components caused
by modifying vehicle height outside of
factory settings will not be covered by the
vehicle warranty.
Caution
Warning (Continued)
Even small amounts of contamination can
cause damage to vehicle systems. Do not
allow contaminants to contact the fluids,
reservoir caps, or dipsticks.
or parts. Always follow owner’s manual
procedures and consult the service
manual for your vehicle before doing any
service work.
Damage to vehicle components resulting
from modifications or the installation or use
of non-GM certified parts, including control
module or software modifications, is not
covered under the terms of the vehicle
warranty and may affect remaining
Hood
If doing some of your own service work, use
the proper service manual. It tells you much
more about how to service the vehicle than
this manual can. To order the proper service
manual, see Publication Ordering
Warning
{
warranty coverage for affected parts.
For vehicles with auto engine stop/start,
turn the vehicle off before opening the
hood. If the vehicle is on, the engine will
start when the hood is opened. You or
others could be injured.
GM Accessories are designed to complement
and function with other systems on the
vehicle. See your dealer to accessorize the
vehicle using genuine GM Accessories
installed by a dealer technician.
Information 0 437.
This vehicle has an airbag system. Before
attempting to do your own service work,
see Servicing the Airbag-Equipped Vehicle
0 68.
Also, see Adding Equipment to the
Airbag-Equipped Vehicle 0 68.
If equipped with remote vehicle start, open
the hood before performing any service
work to prevent remote starting the vehicle
accidentally. See Remote Vehicle Start 0 18.
Warning
{
Components under the hood can get hot
from running the engine. To help avoid
the risk of burning unprotected skin,
never touch these components until they
have cooled, and always use a glove or
towel to avoid direct skin contact.
Vehicle Checks
Keep a record with all parts receipts and list
the mileage and the date of any service
work performed. See Maintenance Records
0 424.
Doing Your Own Service Work
Warning
{
It can be dangerous to work on your
vehicle if you do not have the proper
knowledge, service manual, tools,
(Continued)
Clear any snow from the hood before
opening.
Vehicle Care
335
To open the hood:
To close the hood:
1. Pull the hood release lever with the
i symbol. It is on the lower left side
of the instrument panel.
1. Before closing the hood, be sure all filler
caps are on properly, and all tools are
removed.
2. Pull the hood down until the strut
system is no longer holding up the hood.
3. Allow the hood to fall. Check to make
sure the hood is latched completely.
Repeat this process with additional force
if necessary.
Warning
{
Do not drive the vehicle if the hood is
not latched completely. The hood could
open fully, block your vision, and cause a
crash. You or others could be injured.
Always close the hood completely before
driving.
2. Go to the front of the vehicle and locate
the secondary release lever under the
front center of the hood. Push the
secondary hood release lever to the right
to release.
The Driver Information Center (DIC) will
display a message if the hood is not fully
closed, and the vehicle is moving. Stop and
turn off the vehicle, check the hood for
obstructions, and close the hood again.
Check to see if the message still appears on
the DIC.
3. After you have partially lifted the hood,
the gas strut system will automatically
lift the hood and hold it in the fully
open position.
336
Vehicle Care
Engine Compartment Overview
2.7L L4 Engine (L3B)
Vehicle Care
337
1. Remote Negative (–) Location. See Jump
Starting - North America 0 399.
2. Positive (+) Terminal (Under Cover). See
Jump Starting - North America 0 399.
3. Battery - North America 0 352.
4. Engine Compartment Fuse Block 0 362.
5. Engine Cooling Fans (Out of View). See
Cooling System 0 343.
6. Engine Oil Fill Cap. See “When to Add
Engine Oil” under Engine Oil 0 339.
7. Engine Oil Dipstick. See “Checking Engine
Oil” under Engine Oil 0 339.
8. Coolant Surge Tank and Pressure Cap.
See Cooling System 0 343.
9. Engine Air Cleaner/Filter 0 342.
10. Brake Fluid Reservoir. See Brake Fluid
0 351.
11. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” under Washer
Fluid 0 349.
338
Vehicle Care
5.3L V8 Engine (L84) Shown, 6.2L V8 Engine (L87) Similar
1. Remote Negative (–) Location. See Jump
Starting - North America 0 399.
5. Engine Oil Dipstick. See “Checking Engine
Oil” under Engine Oil 0 339.
8. Coolant Surge Tank and Pressure Cap.
See Cooling System 0 343.
2. Positive (+) Terminal (Under Cover). See
Jump Starting - North America 0 399.
6. Engine Cooling Fans (Out of View). See
Cooling System 0 343.
9. Engine Air Cleaner/Filter 0 342.
10. Brake Fluid Reservoir. See Brake Fluid
0 351.
3. Battery - North America 0 352.
7. Engine Oil Fill Cap. See “When to Add
Engine Oil” under Engine Oil 0 339.
4. Engine Compartment Fuse Block 0 362.
Vehicle Care
339
11. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” under Washer
Fluid 0 349.
dipstick, wipe it with a clean paper towel
or cloth, then push it back in all the way.
Remove it again, keeping the tip down,
and check the level.
Checking Engine Oil
Check the engine oil level regularly, every
650 km (400 mi), especially prior to a long
trip. The engine oil dipstick handle is a loop.
See Engine Compartment Overview 0 336 for
the location.
Engine Oil
When to Add Engine Oil
To ensure proper engine performance and
long life, careful attention must be paid to
engine oil. Following these simple, but
important steps will help protect your
investment:
Warning
{
The engine oil dipstick handle may be
hot; it could burn you. Use a towel or
glove to touch the dipstick handle.
.
Use engine oil approved to the proper
specification and of the proper viscosity
grade. See “Selecting the Right Engine
Oil” in this section.
If the oil is below the cross-hatched area at
the tip of the dipstick and the engine has
been off for at least 15 minutes, add 1 L
(1 qt) of the recommended oil and then
recheck the level. See “Selecting the Right
Engine Oil” later in this section for an
explanation of what kind of oil to use. For
engine oil crankcase capacity, see Capacities
and Specifications 0 426.
If a low oil Driver Information Center (DIC)
message displays, check the oil level.
.
Check the engine oil level regularly and
maintain the proper oil level. See
“Checking Engine Oil” and “When to Add
Engine Oil” in this section.
Follow these guidelines:
.
To get an accurate reading, park the
vehicle on level ground. Check the engine
oil level after the engine has been off for
at least two hours. Checking the engine
oil level on steep grades or too soon after
engine shutoff can result in incorrect
readings. Accuracy improves when
.
.
Change the engine oil at the appropriate
time. See Engine Oil Life System 0 341.
Always dispose of engine oil properly. See
“What to Do with Used Oil” in this
section.
Caution
checking a cold engine prior to starting.
Remove the dipstick and check the level.
Do not add too much oil. Oil levels above
or below the acceptable operating range
shown on the dipstick are harmful to the
engine. If the oil level is above the
operating range (i.e., the engine has so
(Continued)
.
If unable to wait two hours, the engine
must be off for at least 15 minutes if the
engine is warm, or at least 30 minutes if
the engine is not warm. Pull out the
340
Vehicle Care
Engine Oil Additives/Engine Oil Flushes
Caution (Continued)
Do not add anything to the oil. The
recommended oils meeting the dexos1
specification are all that is needed for good
performance and engine protection.
much oil that the oil level gets above the
cross-hatched area that shows the proper
operating range), the engine could be
damaged. Drain the excess oil or limit
driving of the vehicle, and seek a service
professional to remove the excess oil.
Engine oil system flushes are not
recommended and could cause engine
damage not covered by the vehicle
warranty.
Caution
Failure to use the recommended engine
oil or equivalent can result in engine
damage not covered by the vehicle
warranty.
See Engine Compartment Overview 0 336 for
the location of the engine oil fill cap.
What to Do with Used Oil
Add enough oil to put the level somewhere
in the proper operating range. Push the
dipstick all the way back in when through.
Used engine oil contains certain elements
that can be unhealthy for your skin and
could even cause cancer. Do not let used oil
stay on your skin for very long. Clean your
skin and nails with soap and water, or a
good hand cleaner. Wash or properly
dispose of clothing or rags containing used
engine oil. See the manufacturer's warnings
about the use and disposal of oil products.
Viscosity Grade
Use SAE 0W-20 viscosity grade engine oil for
the 5.3L and 6.2L V8 engines.
Selecting the Right Engine Oil
Selecting the right engine oil depends on
both the proper oil specification and
viscosity grade. See Recommended Fluids
and Lubricants 0 421.
Use SAE 5W-30 viscosity grade engine oil for
the 2.7L L4 engine. Cold Temperature
Operation: In an area of extreme cold,
where the temperature falls below −29 °C
(−20 °F), an SAE 0W-30 oil may be used. An
oil of this viscosity grade will provide easier
cold starting for the engine at extremely
low temperatures.
Specification
Used oil can be a threat to the environment.
If you change your own oil, be sure to drain
all the oil from the filter before disposal.
Never dispose of oil by putting it in the
trash or pouring it on the ground, into
sewers, or into streams or bodies of water.
Recycle it by taking it to a place that
collects used oil.
Use full synthetic engine oils that meet the
dexos1 specification. Engine oils that have
been approved by GM as meeting the
dexos1 specification are marked with the
dexos1 approved logo.
When selecting an oil of the appropriate
viscosity grade, it is recommended to select
an oil of the correct specification. See
“Specification” earlier in this section.
Vehicle Care
341
will perform this work and reset the system.
It is also important to check the oil regularly
over the course of an oil drain interval and
keep it at the proper level.
The oil life system can also be reset as
follows:
Engine Oil Life System
When to Change Engine Oil
1. Display the oil life percentage on the
DIC. See Driver Information Center (DIC)
(Base Level) 0 127 or Driver Information
Center (DIC) (Uplevel) 0 128.
This vehicle has a computer system that
indicates when to change the engine oil and
filter. This is based on a combination of
factors which include engine revolutions,
engine temperature, and miles driven. Based
on driving conditions, the mileage at which
an oil change is indicated can vary
considerably. For the oil life system to work
properly, the system must be reset every
time the oil is changed.
If the system is ever reset accidentally, the
oil must be changed at 5 000 km (3,000 mi)
since the last oil change. Remember to reset
the oil life system whenever the oil is
changed.
2. Fully press the accelerator pedal slowly
three times within five seconds.
3. If the display changes to 100%, the
system is reset.
How to Reset the Engine Oil Life System
If the vehicle has a CHANGE ENGINE OIL
SOON message and it comes back on when
the vehicle is started and/or the oil
life percentage is near 0%, the engine oil
life system has not been reset. Repeat the
procedure.
Reset the system whenever the engine oil is
changed so that the system can calculate
the next engine oil change. Always reset the
engine oil life to 100% after every oil
change. It will not reset itself. To reset the
engine oil life system:
On some vehicles, when the system has
calculated that oil life has been diminished,
a CHANGE ENGINE OIL SOON message comes
on to indicate that an oil change is
1. Display the oil life percentage on the
DIC. See Driver Information Center (DIC)
(Base Level) 0 127 or Driver Information
Center (DIC) (Uplevel) 0 128.
necessary. Change the oil as soon as
Automatic Transmission Fluid
possible within the next 1 000 km (600 mi).
It is possible that, if driving under the best
conditions, the oil life system might indicate
that an oil change is not necessary for up to
a year. The engine oil and filter must be
changed at least once a year and, at this
time, the system must be reset. For vehicles
without the CHANGE ENGINE OIL SOON
message, an oil change is needed when the
REMAINING OIL LIFE percentage is near 0%.
Your dealer has trained service people who
When to Check and Change Automatic
Transmission Fluid
2. Press the thumbwheel on the steering
wheel, or the trip odometer reset stem if
the vehicle does not have DIC controls,
for several seconds. When the
confirmation message displays, select
YES. The oil life will change to 100%.
It is usually not necessary to check the
transmission fluid level. The only reason for
fluid loss is a transmission leak or
overheated transmission. This vehicle is not
equipped with a transmission fluid level
dipstick. There is a special procedure for
checking and changing the transmission fluid
in these vehicles. Because this procedure is
342
Vehicle Care
difficult, this should be done at the dealer.
Contact the dealer for additional information
or the procedure can be found in the service
manual. See Publication Ordering
Select Reset then press the thumbwheel
or press the reset stem for several
seconds.
When to Change the Engine Air Filter
When the Driver Information Center (DIC)
displays a message to replace the engine air
filter at the next oil change, follow this
timing.
4. Press the thumbwheel or the reset stem
to confirm the reset.
Information 0 437.
Caution
When the DIC displays a message to replace
the engine air filter soon, replace the engine
air filter at the earliest convenience.
Engine Air Cleaner/Filter
The engine air cleaner/filter is on the driver
side of the engine compartment. See Engine
Compartment Overview 0 336.
Use of the incorrect automatic
transmission fluid may damage the
vehicle, and the damage may not be
covered by the vehicle warranty. Always
use the correct automatic transmission
fluid. See Recommended Fluids and
Lubricants 0 421.
The system must be reset after the engine
air filter is changed.
When to Inspect the Engine Air Cleaner/
Filter
If the DIC displays a message to check the
engine air filter system, see your dealer.
If the vehicle is not equipped with the
engine air filter life system see Maintenance
Schedule 0 417 for intervals on inspecting
and replacing the engine air cleaner filter.
How to Reset the Engine Air Filter Life
System
Change the fluid and filter at the scheduled
maintenance intervals listed in Maintenance
Schedule 0 417. Be sure to use the
transmission fluid listed in Recommended
Fluids and Lubricants 0 421.
To reset:
1. Place the vehicle in P (Park).
How to Inspect/Replace the Engine Air
Cleaner/Filter
2. Display the Air Filter Life on the DIC. See
Driver Information Center (DIC) (Base
Level) 0 127 or Driver Information Center
(DIC) (Uplevel) 0 128.
Do not start or run the engine with the
engine air cleaner/filter housing open.
Before removing the engine air cleaner/
filter, clear any dirt and debris away from
the engine air cleaner/filter housing and
nearby components. Remove the engine air
cleaner/filter. Lightly tap and shake the
engine air cleaner/filter (away from the
vehicle), to release loose dust and dirt.
Engine Air Filter Life System
If equipped, this feature provides the engine
air filter’s remaining life and best timing for
a change. The timing to change an engine
air filter depends on driving and
3. Press T on the steering wheel, or press
the trip odometer reset stem if the
vehicle does not have DIC controls, to
move to the Reset/Disable display area.
environmental conditions.
Vehicle Care
Warning
343
Inspect the engine air cleaner/filter for
damage; replace if damaged. Do not clean
the engine air cleaner/filter or components
with water or compressed air.
3. Remove the three screws on top of the
cover of the housing, then slide and lift
the cover.
{
Operating the engine with the air
cleaner/filter off can cause you or others
to be burned. Use caution when working
on the engine. Do not start the engine or
drive the vehicle with the air cleaner/
filter off, as flames may be present if the
engine backfires.
4. Lift and remove the engine air cleaner/
filter.
To inspect or replace the engine air cleaner/
filter:
Warning
{
If part replacement is necessary, the part
must be replaced with one of the same
part number or with an equivalent part.
Use of a replacement part without the
same fit, form, and function may result
in personal injury or damage to the
vehicle.
Caution
If the air cleaner/filter is off, dirt can
easily get into the engine, which could
damage it. Always have the air cleaner/
filter in place when driving.
5. Lightly tap and shake the engine air
cleaner/filter, away from the vehicle, to
release loose dust and dirt. Replace the
engine air filter if damaged.
Cooling System
5.3L V8 Engine (L84) Shown, 2.7L L4 Engine
(L3B), and 6.2L V8 Engine (L87) Similar.
If the vehicle has the Duramax diesel
engine, see the Duramax diesel supplement.
6. Reverse Steps 2–5 to reinstall the engine
air cleaner/filter cover housing.
The cooling system allows the engine to
maintain the correct working temperature.
1. Air Duct Clamp
2. Screws
7. If equipped, reset the engine air filter life
system after replacing the engine air
filter. See Engine Air Filter Life System
0 342.
1. Locate the air cleaner/filter assembly.
See Engine Compartment Overview
0 336.
2. Disconnect the outlet duct by loosening
the air duct clamp (1).
344
Vehicle Care
1. Engine Electric Cooling Fans (Out
of View)
2. Coolant Surge Tank and Pressure Cap
The following explains the cooling system
and how to check and add coolant when it
is low. If there is a problem with engine
overheating, see Engine Overheating 0 347.
Warning
{
What to Use
An underhood electric fan can start up
even when the engine is not running and
can cause injury. Keep hands, clothing,
and tools away from any underhood
electric fan.
Warning
{
Plain water, or other liquids such as
alcohol, can boil before the proper
coolant mixture will. With plain water or
the wrong mixture, the engine could get
too hot but there would not be an
overheat warning. The engine could catch
fire and you or others could be burned.
2.7L L4 Engine (L3B)
Warning
{
Do not touch heater, radiator, a/c pipes
or hoses, or other engine parts. They can
be very hot and can burn you. Do not
run the engine if there is a leak; all
coolant could leak out. That could cause
an engine fire and can burn you. Fix any
leak before driving the vehicle.
Use a 50/50 mixture of clean, drinkable
water and DEX-COOL coolant. This mixture:
Gives freezing protection down to −37 °C
(−34 °F), outside temperature.
Gives boiling protection up to 129 °C
(265 °F), engine temperature.
Protects against rust and corrosion.
Will not damage aluminum parts.
.
.
Engine Coolant
.
.
.
The cooling system in the vehicle is filled
with DEX-COOL engine coolant. This coolant
is designed to remain in the vehicle for
5 years or 240 000 km (150,000 mi),
whichever occurs first.
Helps keep the proper engine
temperature.
5.3L V8 Engine (L84) Shown, 6.2L V8 Engine
(L87) Similar
Vehicle Care
345
Automatic Coolant Service Fill
Instructions (L3B Engine)
Caution
Do not use anything other than a mix of
DEX-COOL coolant that meets GM
Standard GMW3420 and clean, drinkable
water. Anything else can cause damage
to the engine cooling system and the
vehicle, which would not be covered by
the vehicle warranty.
This feature assists in filling and removing
air from the cooling system after service of
components or when coolant is added after
being too low.
To activate the fill and air removal process:
1. Remove the coolant surge tank pressure
cap when the cooling system, including
the coolant surge tank pressure cap and
upper radiator hose, is no longer hot.
Turn the pressure cap; slowly
counterclockwise about one full turn. If a
hiss is heard, wait for that to stop.
A hiss means there is still some
pressure left.
Never dispose of engine coolant by putting
it in the trash, or by pouring it on the
ground, or into sewers, streams, or bodies of
water. Have the coolant changed by an
authorized service center, familiar with legal
requirements regarding used coolant
disposal. This will help protect the
All Engines
Check to see if coolant is visible in the
coolant surge tank. If the coolant inside the
coolant surge tank is boiling, wait until it
cools down. The coolant level should be at
or above the indicated mark. If it is not,
there may be a leak in the cooling system.
environment and your health.
2. Keep turning the pressure cap slowly,
and remove it.
Checking Coolant
3. Fill the coolant surge tank with the
proper mixture to the indicated mark.
The coolant surge tank is in the engine
compartment on the driver side of the
vehicle. See Engine Compartment Overview
0 336.
If coolant is visible but the coolant level is
not at or above the indicated mark, see the
following sections on how to add coolant to
the coolant surge tank following.
4. Connect the vehicle to a battery charger.
5. Set the ignition to service mode, see
Ignition Positions 0 211.
The vehicle must be on a level surface when
checking the coolant level.
6. Turn off the air conditioning.
7. Set the parking brake.
346
Vehicle Care
8. At the same time, press the accelerator
and the brake for automatic vehicles for
two seconds, then release.
Caution
Warning
{
Failure to follow the specific coolant fill
procedure could cause the engine to
overheat and could cause system
damage. If coolant is not visible in the
surge tank, contact your dealer.
Spilling coolant on hot engine parts can
burn you. Coolant contains ethylene
glycol and it will burn if the engine parts
are hot enough.
9. Listen for pump activation and
movement of the control valves while
watching the level of the coolant in the
surge tank. Add fluid as the level drops
below the indicated mark on the surge
tank. Allow 15 minutes for the fill and air
removal process to complete.
If no coolant is visible in the surge tank, add
coolant.
Warning
{
Plain water, or other liquids such as
alcohol, can boil before the proper
10. Reinstall the surge tank cap.
coolant mixture will. With plain water or
the wrong mixture, the engine could get
too hot but there would not be an
overheat warning. The engine could catch
fire and you or others could be burned.
If the tank empties, turn the ignition off,
allow the Electronic Control Module (ECM) to
go to sleep, about two minutes, refill to the
indicated mark, and repeat Steps 5–9.
How to Add Coolant to the Coolant
Surge Tank for Gasoline Engines
Except L3B
1. Remove the coolant surge tank pressure
cap when the cooling system, including
the coolant surge tank pressure cap and
upper radiator hose, is no longer hot.
Warning
{
If the vehicle has a diesel engine, see
“Cooling System” in the Duramax diesel
supplement for the proper coolant fill
procedure.
Steam and scalding liquids from a hot
cooling system are under pressure.
Turning the pressure cap, even a little,
can cause them to come out at high
speed and you could be burned. Never
turn the cap when the cooling system,
including the pressure cap, is hot. Wait
for the cooling system and pressure cap
to cool.
Turn the pressure cap slowly
counterclockwise about one full turn. If a
hiss is heard, wait for that to stop.
A hiss means there is still some
pressure left.
2. Keep turning the pressure cap slowly,
and remove it.
3. Fill the coolant surge tank with the
proper mixture to the full cold mark.
Vehicle Care
347
4. With the coolant surge tank pressure cap
off, start the engine and let it run until
the engine coolant temperature gauge
indicates approximately 90 °C (195 °F).
2.7L L4, 5.3L V8, and 6.2L V8 Engines
Caution
Check to see if the engine cooling fans are
running. If the engine is overheating, the
fans should be running. If they are not, do
not continue to run the engine and have the
vehicle serviced.
Do not run the engine if there is a leak
in the engine cooling system. This can
cause a loss of all coolant and can
damage the system and vehicle. Have
any leaks fixed right away.
By this time, the coolant level inside the
coolant surge tank may be lower. If the
level is lower, add more of the proper
mixture to the coolant surge tank until
the level reaches the indicated mark.
If the engine or transmission detects an
impending hot fluid condition, then the
transmission may force upshifts to limit
temperatures. Downshifts may also be
prevented in this instance. Normal operation
may continue unless the display indicates
there is a hot condition and engine should
be idled.
The vehicle has several indicators to warn of
engine overheating.
5. Replace the pressure cap tightly.
There is a coolant temperature gauge in the
vehicle's instrument cluster. See Engine
Coolant Temperature Gauge 0 113.
6. Verify coolant level after the engine is
shut off and the coolant is cold.
If necessary, repeat coolant fill procedure
Steps 1–6.
In addition, there are ENGINE OVERHEATED
STOP ENGINE, ENGINE OVERHEATED IDLE
ENGINE, and ENGINE POWER IS REDUCED
messages in the Driver Information
Center (DIC).
If Steam is Coming from the Engine
Compartment
Caution
If the pressure cap is not tightly installed,
coolant loss and engine damage may
occur. Be sure the cap is properly and
tightly secured.
Warning
{
If the decision is made not to lift the hood
when this warning appears, get service help
right away. See Roadside Assistance Program
0 433.
Steam and scalding liquids from a hot
cooling system are under pressure.
Turning the pressure cap, even a little,
can cause them to come out at high
speed and you could be burned. Never
turn the cap when the cooling system,
including the pressure cap, is hot. Wait
for the cooling system and pressure cap
to cool.
Engine Overheating
If the vehicle has the Duramax diesel
engine, see the Duramax diesel supplement.
If the decision is made to lift the hood,
make sure the vehicle is parked on a level
surface.
348
Vehicle Care
3. When it is safe to do so, pull off the
road, shift to P (Park) or N (Neutral) and
let the engine idle.
If No Steam is Coming from the Engine
Compartment
Overheated Engine Protection
Operating Mode
The ENGINE OVERHEATED STOP ENGINE or
the ENGINE OVERHEATED IDLE ENGINE
message, along with a low coolant
If an overheated engine condition exists and
the ENGINE POWER IS REDUCED message
displays, an overheat protection mode which
alternates firing groups of cylinders helps to
prevent engine damage. In this mode, a loss
in power and engine performance will be
noticed. This operating mode allows the
vehicle to be driven to a safe place in an
emergency. Driving extended distances and/
or towing a trailer in the overheat
If the temperature overheat gauge is no
longer in the overheat zone or an overheat
warning no longer displays, the vehicle can
be driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a safe
vehicle distance from the vehicle in front.
If the warning does not come back on,
continue to drive normally and have the
cooling system checked for proper fill and
function.
condition, can indicate a serious problem.
The 2.7L L4 engine will shut down
automatically if the ENGINE OVERHEATED
STOP ENGINE message displays.
If there is an engine overheat warning, but
no steam is seen or heard, the problem may
not be too serious. Sometimes the engine
can get a little too hot when the vehicle:
protection mode should be avoided.
If the warning continues, pull over, stop, and
park the vehicle right away.
If the engine or transmission detects an
impending hot fluid condition, then the
transmission may force upshifts to limit
temperatures. Downshifts may also be
prevented in this instance. Normal operation
may continue unless the display indicates
there is a hot condition and engine should
be idled.
.
.
.
.
Climbs a long hill on a hot day.
Stops after high-speed driving.
Idles for long periods in traffic.
Tows a trailer; see Trailer Towing 0 303.
If there is still no sign of steam and the
vehicle is equipped with an engine driven
cooling fan, push down the accelerator until
the engine speed is about twice as fast as
normal idle speed for at least five minutes
while the vehicle is parked. If the warning is
still there, turn off the engine and get
everyone out of the vehicle until it
cools down.
If the ENGINE OVERHEATED STOP ENGINE or
the ENGINE OVERHEATED IDLE ENGINE
message appears with no sign of steam, try
this for a minute or so:
Caution
1. Turn the air conditioning off.
After driving in the overheated engine
protection operating mode, the engine oil
will be severely degraded. Any repairs
performed before the engine is cool may
(Continued)
2. Turn the heater on to the highest
temperature and to the highest fan
speed. Open the windows as necessary.
If there is no sign of steam, idle the engine
for five minutes while parked. If the warning
is still displayed, turn off the engine until it
cools down.
Vehicle Care
Caution
349
Washer Fluid
Caution (Continued)
.
.
.
Do not use washer fluid that contains
any type of water repellent coating.
This can cause the wiper blades to
chatter or skip.
cause engine damage. Allow the engine
to cool before attempting any repair.
Repair the cause of coolant loss, change
the oil, and reset the oil life system. See
Engine Oil 0 339.
What to Use
When windshield washer fluid needs to be
added, be sure to read the manufacturer's
instructions before use. Use a fluid that has
sufficient protection against freezing in an
area where the temperature may fall below
freezing.
Do not use engine coolant (antifreeze)
in the windshield washer. It can
damage the windshield washer system
and paint.
Engine Fan
If the vehicle has the Duramax diesel
engine, see the Duramax diesel supplement.
Adding Washer Fluid
Do not mix water with ready-to-use
washer fluid. Water can cause the
solution to freeze and damage the
washer fluid tank and other parts of
the washer system.
The vehicle has a low washer fluid message
on the DIC that comes on when the washer
fluid is low. The message is displayed for
15 seconds at the start of each ignition cycle.
When the WASHER FLUID LOW ADD FLUID
message displays, washer fluid will need to
be added to the windshield washer fluid
reservoir.
The vehicle has electric cooling fan(s). The
fans may be heard spinning at low speed
during most everyday driving. The fans may
turn off if no cooling is required. Under
heavy vehicle loading, trailer towing, high
outside temperatures, or operation of the air
conditioning system, the fans may change
to high speed and an increase in fan noise
may be heard. This is normal and indicates
that the cooling system is functioning
properly. The fans will change to low speed
when additional cooling is no longer
required.
.
.
When using concentrated washer fluid,
follow the manufacturer instructions
for adding water.
Fill the washer fluid tank only
three-quarters full when it is very cold.
This allows for fluid expansion if
freezing occurs, which could damage
the tank if it is completely full.
Brakes
The electric engine cooling fans may run
after the engine has been turned off. This is
normal and no service is required.
Open the cap with the washer symbol on it.
Add washer fluid until the tank is full. See
Engine Compartment Overview 0 336 for
reservoir location.
Disc brake linings have built-in wear
indicators that make a high-pitched warning
sound when the brake linings are worn and
350
Vehicle Care
new linings are needed. The sound can come
and go or can be heard all the time when
the vehicle is moving, except when applying
the brake pedal firmly.
Brake pads should be replaced as complete
axle sets.
When the system has determined that the
brake pads need to be replaced, a message
will display, which may include mileage
remaining.
Brake Pedal Travel
See your dealer if the brake pedal does not
return to normal height, or if there is a
rapid increase in pedal travel. This could be
a sign that brake service may be required.
Brake pads should always be replaced as
complete axle sets.
Warning
{
The brake wear warning sound means
that soon the brakes will not work well.
That could lead to a crash. When the
brake wear warning sound is heard, have
the vehicle serviced.
How to Reset the Brake Pad Life System
The system will automatically detect when
significantly worn brake pads are replaced.
When the ignition is turned on after new
pads and wear sensors are installed, a
message will display. Follow the prompts to
reset the system.
Replacing Brake System Parts
Always replace brake system parts with
new, approved replacement parts. If this is
not done, the brakes may not work
properly. The braking performance can
change in many ways if the wrong brake
parts are installed or if parts are improperly
installed.
Caution
Continuing to drive with worn-out brake
linings could result in costly brake
repairs.
The brake pad life system can also be
manually reset:
1. Display Brake Pad Life on the DIC. See
Driver Information Center (DIC) (Base
Level) 0 127 or Driver Information Center
(DIC) (Uplevel) 0 128.
Brake Pad Life System
Some driving conditions or climates can
cause a brake squeal when the brakes are
first applied, clearing up following several
applications. This does not mean something
is wrong with the brakes.
When to Change Brake Pads
This vehicle has a system that estimates the
remaining life of the front and rear brake
pads. Brake pad life is displayed in the
Driver Information Center (DIC), along with
a percentage for each axle. The system must
be reset every time the brake pads are
changed.
2. Press the thumbwheel or the trip
odometer reset stem if the vehicle does
not have DIC buttons. Select front or rear
pads as appropriate.
Properly torqued wheel nuts are necessary
to help prevent brake pulsation. When tires
are rotated, inspect brake linings for wear
and evenly tighten wheel nuts in the proper
sequence to torque specifications. See
Capacities and Specifications 0 426.
3. Select YES on the confirmation message,
or press the trip odometer reset stem on
a base level DIC. Repeat for pads on the
other axle if they were also replaced.
Vehicle Care
351
Always clean the brake fluid reservoir cap
and the area around the cap before
removing it.
How to Disable the Brake Pad Life
System
Brake Fluid
The brake pad life system can be turned off.
This may be necessary if aftermarket brake
pads without wear sensors are installed.
When the system is turned off, the front
and rear brake pad life percentages will not
display. However, the built-in wear
indicators that make a high-pitched warning
sound when the brake pads are worn can
still determine when the pads should be
replaced. See Brakes 0 349.
Do not top off the brake fluid. Adding fluid
does not correct a leak. If fluid is added
when the linings are worn, there will be too
much fluid when new brake linings are
installed. Add or remove fluid, as necessary,
only when work is done on the brake
hydraulic system.
The brake master cylinder reservoir is filled
with GM approved DOT 4 brake fluid as
indicated on the reservoir cap. See Engine
Compartment Overview 0 336 for the
location of the reservoir.
Warning
{
If too much brake fluid is added, it can
spill on the engine and burn, if the
engine is hot enough. You or others could
be burned, and the vehicle could be
damaged. Add brake fluid only when
work is done on the brake hydraulic
system.
To turn off the brake pad life system:
Checking Brake Fluid
1. Display Brake Pad Life on the DIC. See
Driver Information Center (DIC) (Base
Level) 0 127 or Driver Information Center
(DIC) (Uplevel) 0 128.
With the vehicle in P (Park) on a level
surface, the brake fluid level should be
between the minimum and maximum marks
on the brake fluid reservoir.
2. Select DISABLE.
There are only two reasons why the brake
fluid level in the reservoir may go down:
To turn the brake pad life system back on,
follow the above steps but select ENABLE in
Step 2.
When the brake fluid falls to a low level,
the brake warning light comes on. See Brake
System Warning Light 0 119.
.
Normal brake lining wear. When new
linings are installed, the fluid level goes
back up.
Brake fluid absorbs water over time which
degrades the effectiveness of the brake fluid.
Replace brake fluid at the specified intervals
to prevent increased stopping distance. See
Maintenance Schedule 0 417.
.
A fluid leak in the brake hydraulic system.
Have the brake hydraulic system fixed.
With a leak, the brakes will not
work well.
352
Vehicle Care
What to Add
Stop/Start System
Vehicle Storage
Use only GM approved DOT 4 brake fluid
from a clean, sealed container. See
Recommended Fluids and Lubricants 0 421.
Vehicles equipped with a 2.7L L3B, , 5.3L L84
or 6.2L L87 are equipped with a Stop/Start
system to shut off the engine to help
Warning
{
Batteries have acid that can burn you and
gas that can explode. You can be badly
hurt if you are not careful. Always wear
eye protection. See Jump Starting - North
America 0 399 for tips on working
conserve fuel. See Stop/Start System 0 214.
Warning
{
Vehicles with the Stop/Start system have an
Absorbed Glass Mat (AGM) 12-volt battery.
Installation of a standard 12-volt battery will
result in reduced 12-volt battery life. When
using a 12-volt battery charger on the 12-volt
AGM battery, some chargers have an AGM
battery setting on the charger. If available,
use the AGM setting on the charger to limit
charge voltage to 14.8 volts. Follow the
charger manufacturer’s instructions.
The wrong or contaminated brake fluid
could result in damage to the brake
system. This could result in the loss of
braking leading to a possible injury.
Always use the proper GM approved
brake fluid.
around a battery without getting hurt.
Infrequent Usage: Remove the black,
negative (−) cable from the battery to keep
the battery from running down.
Extended Storage: Remove the black,
negative (−) cable from the battery or use a
battery trickle charger.
Caution
If brake fluid is spilled on the vehicle's
painted surfaces, the paint finish can be
damaged. Immediately wash off any
painted surface.
Warning
{
Negative Battery Cable Disconnection
WARNING: Battery posts, terminals and
related accessories can expose you to
chemicals including lead and lead
compounds, which are known to the
State of California to cause cancer and
birth defects or other reproductive harm.
Wash hands after handling. For more
information go to
Warning
{
Before disconnecting the negative battery
cable, turn off all features, turn the
ignition off, and remove the key,
if equipped, from the vehicle. If this is
not done, you or others could be injured,
and the vehicle could be damaged.
Battery - North America
The original equipment battery is
maintenance free. Do not remove the cap
and do not add fluid.
Refer to the replacement number shown on
the original battery label when a new
battery is needed. See Engine Compartment
Overview 0 336 for battery location.
See California Proposition 65 Warning 0 1.
Vehicle Care
353
1. Loosen and remove the negative battery
cable nut (1) at the battery sensor
connection.
3. Cover the negative battery cable clamp,
and negative battery post with a
non-conductive material to prevent any
contact with the negative battery cable.
Caution
If the battery is disconnected with the
ignition on or the vehicle in Retained
Accessory Power (RAP), the OnStar
back-up battery will be permanently
discharged and will need to be replaced.
2. Remove the negative battery cable (2)
from the battery sensor stud.
Negative Battery Cable Reconnection
3. Cover the negative battery cable
terminal, battery sensor stud, and
negative battery post with a
non-conductive material to prevent any
contact with the negative battery cable.
Caution
When reconnecting the battery:
1. Make sure the lamps, features, and
accessories are turned off.
.
Use the original nut from the vehicle
to secure the negative battery cable.
Do not use a different nut. If you
need a replacement nut, see your
dealer.
2. Turn the ignition off and remove the
key, if equipped.
For vehicles not equipped with the Stop/
Start system:
For vehicles equipped with the Stop/Start
system:
.
Tighten the nut with a hand tool. Do
not use an impact wrench or power
tools to tighten the nut.
The vehicle could be damaged if these
guidelines are not followed.
Caution
Do not use paints, lubricants, or corrosion
inhibitors on the nut that secures the
negative battery cable to the vehicle. This
could damage the vehicle.
1. Loosen the negative battery cable nut (1).
2. Remove the negative battery cable
clamp (2) from the negative battery post.
354
Vehicle Care
For vehicles equipped with the Stop/Start
system:
What to Use
Refer to Recommended Fluids and Lubricants
0 421 to determine what kind of lubricant
to use.
1. Install the negative battery cable to the
battery sensor stud.
2. Install the negative battery cable nut to
the battery sensor stud and tighten.
Front Axle
When to Check Lubricant
3. Turn the ignition on.
It is not necessary to regularly check the
front axle fluid unless a leak is suspected or
an unusual noise is heard. A fluid loss could
indicate a problem. Have it inspected and
repaired. This service can be complex. See
your dealer.
For vehicles not equipped with the Stop/
Start system:
1. Install the negative battery cable clamp
to the negative battery post.
2. Tighten the negative battery cable nut.
3. Turn the ignition on.
1. Fill Plug
2. Drain Plug
Do not directly power wash the transfer
case and/or front/rear axle output seals.
High pressure water can overcome the seals
and contaminate the fluid. Contaminated
fluid will decrease the life of the transfer
case and/or drive axles and should be
replaced.
To get an accurate reading, the vehicle
should be on a level surface.
Four-Wheel Drive
Transfer Case
If the level is below the bottom of the fill
plug (1) hole, located on the transfer case,
some lubricant will need to be added. Add
enough lubricant to raise the level to the
bottom of the fill plug (1) hole. Use care not
to overtighten the plug.
When to Check Lubricant
Refer to Maintenance Schedule 0 417 to
determine when to check the lubricant.
Rear Axle
When to Check Lubricant
When to Change Lubricant
It is not necessary to regularly check the
rear axle fluid unless a leak is suspected or
an unusual noise is heard. A fluid loss could
Refer to Maintenance Schedule 0 417 to
determine how often to change the
lubricant.
Vehicle Care
355
indicate a problem. Have it inspected and
repaired. This service can be complex. See
your dealer.
3. With the engine off, turn the ignition on,
but do not start the engine. Without
applying the regular brake, try to move
the shift lever out of P (Park) with
normal effort. If the shift lever moves
out of P (Park), contact your dealer for
service.
foot pressure from the regular brake
pedal. Do this until the vehicle is held by
the parking brake only.
To check the P (Park) mechanism's holding
ability: With the engine running, shift to
P (Park). Then release the parking brake
followed by the regular brake.
.
Do not directly power wash the transfer
case and/or front/rear axle output seals.
High pressure water can overcome the seals
and contaminate the fluid. Contaminated
fluid will decrease the life of the transfer
case and/or drive axles and should be
replaced.
Contact your dealer if service is required.
Park Brake and P (Park)
Mechanism Check
Wiper Blade Replacement
Windshield wiper blades should be replaced
periodically. See Maintenance Schedule
0 417.
Automatic Transmission Shift Lock
Control Function Check
(Mechanical Shifter)
Warning
{
When you are doing this check, the
vehicle could begin to move. You or
others could be injured and property
could be damaged. Make sure there is
room in front of the vehicle in case it
begins to roll. Be ready to apply the
regular brake at once should the vehicle
begin to move.
Replacement blades come in different types
and are removed in different ways. For
proper type and length, see Maintenance
Replacement Parts 0 422.
Warning
{
When you are doing this inspection, the
vehicle could move suddenly. If the
vehicle moves, you or others could be
injured.
Caution
Allowing the wiper arm to touch the
windshield when no wiper blade is
installed could damage the windshield.
Any damage that occurs would not be
covered by the vehicle warranty. Do not
allow the wiper arm to touch the
windshield.
Park on a fairly steep hill, with the vehicle
facing downhill. Keeping your foot on the
regular brake, set the parking brake.
To check the parking brake's holding
ability: With the engine running and the
transmission in N (Neutral), slowly remove
1. Before starting this check, be sure there
is enough room around the vehicle.
It should be parked on a level surface.
.
2. Apply the parking brake. Be ready to
apply the regular brake immediately if
the vehicle begins to move.
356
Vehicle Care
Front Wiper Blade Replacement
Glass Replacement
Gas Strut(s)
To replace the wiper blade:
If the windshield or front side glass must be
replaced, see your dealer to determine the
correct replacement glass.
Your vehicle may be equipped with gas
strut(s) to provide assistance in lifting and
holding open the hood/trunk/liftgate system
in full open position.
1. Pull the wiper assembly away from the
windshield.
Windshield Replacement
Warning
{
HUD System
If the gas struts that hold open the hood,
trunk, and/or liftgate fail, you or others
could be seriously injured. Take the
vehicle to your dealer for service
If equipped, the windshield is part of the
HUD system. If the windshield must be
replaced, get one that is designed for HUD
or the HUD image may look out of focus.
immediately. Visually inspect the gas
struts for signs of wear, cracks, or other
damage periodically. Check to make sure
the hood/trunk/liftgate is held open with
enough force. If struts are failing to hold
the hood/trunk/liftgate, do not operate.
Have the vehicle serviced.
Driver Assistance Systems
If the windshield needs to be replaced and
the vehicle is equipped with a front camera
sensor for the Driver Assistance Systems, a
GM replacement windshield is
recommended. The replacement windshield
must be installed according to GM
2. Lift up on the latch in the middle of the
wiper blade where the wiper arm
attaches.
specifications for proper alignment. If it is
not, these systems may not work properly,
they may display messages, or they may
not work at all. See your dealer for proper
windshield replacement.
3. With the latch open, pull the wiper blade
down toward the windshield far enough
to release it from the J-hooked end of
the wiper arm.
Caution
Do not apply tape or hang any objects
from gas struts. Also do not push down
or pull on gas struts. This may cause
damage to the vehicle.
4. Remove the wiper blade.
5. Reverse Steps 1–3 for wiper blade
replacement.
See Maintenance Schedule 0 417.
Vehicle Care
357
Bulb Replacement
For the proper type of replacement bulbs,
or any bulb changing procedure not listed in
this section, contact your dealer.
Caution
Do not replace incandescent bulbs with
aftermarket LED replacement bulbs. This
can cause damage to the vehicle electrical
system.
Hood
Liftgate
Halogen Bulbs
Warning
{
Headlamp Aiming
Halogen bulbs have pressurized gas inside
and can burst if you drop or scratch the
bulb. You or others could be injured. Be
sure to read and follow the instructions
on the bulb package.
Front Headlamp Aiming
Headlamp aim has been preset and should
need no further adjustment.
If the vehicle is damaged in a crash, the
headlamp aim may be affected.
If adjustment to the headlamps is necessary,
see your dealer.
LED Lighting
This vehicle has several LED lamps. For
replacement of any LED lighting assembly,
contact your dealer.
Trunk
358
Vehicle Care
4. Unplug the electrical connector from the
bulb by releasing the clip on the
connector.
1. Stoplamp/Taillamp/Turn Signal Lamp
2. Back-Up Lamp
3. Side Marker Lamp
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps
Base Level Headlamp Assembly
5. Replace the bulb and reverse Steps 1–4
to reinstall.
Uplevel Taillamp Assembly
Midlevel and Uplevel
See your dealer for headlamp replacement.
Turn Signal Lamp Replacement
See your dealer for turn signal replacement.
Taillamps, Turn Signal, Stoplamps,
and Back-Up Lamps
Base Level Taillamp Assembly
1500 shown 2500/3500 similar
1. Sidemarker lamp
2. Low-Beam Headlamp
3. High-Beam Headlamp
4. Turn Signal/Park Lamps
1. Back-Up Lamp
It is recommended to replace the grommets
when replacing a bulb. See your dealer.
Headlamp Replacement
To replace one of these bulbs:
1. Open the tailgate.
Base Level
1. Open the hood.
2. Remove the headlamp bulb cover.
3. Turn the bulb socket counterclockwise to
remove it from the headlamp assembly.
Vehicle Care
359
4. Turn the bulb socket counterclockwise.
2. Remove the two rear lamp assembly
screws.
1. Cargo Lamp Bulbs
2. Center High-Mounted Stoplamp
(CHMSL) Bulb
5. Pull the bulb straight out from the
socket.
3. Pull the rear lamp assembly outward and
rearward away from the box side to
remove it from the vehicle.
6. Replace the bulb and reverse Steps 1–5
to reinstall.
Center High-Mounted Stoplamp
(CHMSL) and Cargo Lamp
This procedure is for the regular cab only.
For crew cab and double cab see your
dealer.
360
Vehicle Care
To replace one of these bulbs:
Fuses and circuit breakers protect the wires
that provide the power to the devices in
your vehicle.
If there is a problem on the road and a fuse
needs to be replaced, the same amperage
fuse can be borrowed. Choose some feature
of the vehicle that is not needed to use and
replace it as soon as possible.
To check a fuse, look at the band inside the
fuse. If the band is broken or melted,
replace the fuse. Be sure to replace a bad
fuse with a fuse of the identical size and
rating.
3. Replace the bulb and reverse Step 2 to
reinstall.
1. Remove the two screws and lift off the
lamp assembly.
Electrical System
2. Turn the bulb socket counterclockwise
and pull it straight out.
Electrical System Overload
The vehicle has fuses and circuit breakers to
protect against an electrical system
overload.
3. Pull the bulb straight out from the
socket.
License Plate Lamp
When the current electrical load is too
heavy, the circuit breaker opens and closes,
protecting the circuit until the current load
returns to normal or the problem is fixed.
This greatly reduces the chance of circuit
overload and fire caused by electrical
problems.
To replace the bulb:
1. Reach behind the rear bumper and locate
the bulb.
2. Turn the bulb socket counterclockwise
and pull the bulb straight out of the
socket.
Vehicle Care
361
4. If the fuse must be replaced
immediately, spare fuses are also
provided on the instrument panel end
cap or borrow a replacement fuse with
the same amperage from the fuse block.
Choose a vehicle feature that is not
needed to safely operate the vehicle.
Repeat Steps 2-3.
5. Insert the replacement fuse into the
empty slot of the blown fuse.
At the next opportunity, see your dealer to
replace the blown fuse.
Replacing a Blown Fuse
1. Turn off the vehicle.
Headlamp Wiring
An electrical overload may cause the lamps
to go on and off, or in some cases to
remain off. Have the headlamp wiring
checked right away if the lamps go on and
off or remain off.
2. Locate the fuse puller on the instrument
panel end cap. See the Instrument Panel
Fuse Block (Left) 0 365 or
Instrument Panel Fuse Block (Right)
0 367.
Windshield Wipers
If the wiper motor overheats due to heavy
snow or ice, the windshield wipers will stop
until the motor cools and will then restart.
Although the circuit is protected from
electrical overload, overload due to heavy
snow or ice may cause wiper linkage
3. Use the fuse puller to remove the fuse
from the top or side, as shown above.
362
Vehicle Care
damage. Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an electrical
problem and not snow or ice, be sure to get
it fixed.
Warning
{
Fuses and Circuit Breakers
Installation or use of fuses that do not
meet GM’s original fuse specifications is
dangerous. The fuses could fail, and result
in a fire. You or others could be injured
or killed, and the vehicle could be
damaged.
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit breakers.
This greatly reduces the chance of damage
caused by electrical problems.
Press the clips on the sides and lift the
cover to access the fuse block.
Danger
{
Caution
See Accessories and Modifications 0 333 and
General Information 0 333.
Fuses and circuit breakers are marked
with their ampere rating. Do not exceed
the specified amperage rating when
replacing fuses and circuit breakers. Use
of an oversized fuse or circuit breaker can
result in a vehicle fire. You and others
could be seriously injured or killed.
Spilling liquid on any electrical
component on the vehicle may damage
it. Always keep the covers on any
electrical component.
To check or replace a blown fuse, see
Electrical System Overload 0 360.
Engine Compartment Fuse Block
If the vehicle has a diesel engine, see the
Duramax diesel supplement.
A fuse puller is available in the left
instrument panel end cap.
The vehicle may not be equipped with all of
the fuses, relays, and features shown.
The engine compartment fuse block is in the
engine compartment, on the passenger side
of the vehicle.
Vehicle Care
363
Fuses
Usage
6
Exterior Lighting
Module 7
7
Exterior Lighting
Module 4
8
9
–
Exterior Lighting
Module 5
10
Exterior Lighting
Module 6
11
12
13
14
15
16
17
Body Control Module 2
Rear Defog
Washer Front
–
–
–
IECL 1
19
20
21
22
24
DC/AC Inverter
IECR 2
Fuses
Usage
Fuses
Usage
Headlamp Left
Headlamp Right
–
1
–
–
3
IECL 2
2
4
Fuel Heater
364
Vehicle Care
Fuses
Usage
Fuses
Usage
Fuses
Usage
25
EBCM – Electronic Brake
Control Module
44
Trailer Integration
Module/DEFC/ICCM
Ignition
57
TTPM/SBZA – Side Blind
Zone Alert
26
27
–
58
60
61
Starter Motor
45
Secondary Axle Motor
Horn
PWR/TRN Sensors 2
46
Engine Control Module/
Transmission Control
Module/Integrated
28
29
30
Park Lamp Mirror/Grill
–
–
62
DEFC Battery 1/Canister
Vent Solenoid
Chassis Control Ignition
Exterior Lighting
Module 3
63
Trailer Brake Control
Module
47
48
49
–
–
31
Exterior Lighting
Module 1
65
66
67
68
69
71
–
Transmission Auxiliary
Oil Pump
32
33
34
37
–
Cooling Fan Motor Left
–
NOT R/C
Radars
50
51
A/C Clutch
DEFC Battery 2
Starter Pinion
Cooling Fan
Transfer Case Control
Module
MISC IP Headline
Ignition
52
53
Front Wiper
38
39
40
41
Seat Fan Ignition
Center High-Mounted
Stoplamp
72
Cooling Fan Right/Lower
–
73
Trailer Stop/Turn
Lamp Left
54
55
56
–
MISC Body Ignition
Trailer Parking Lamp
–
Trailer Back-up Lamp
74
75
Trailer Interface
Module 2
SADS – Semi Active
Damping System
42
Integrated Chassis
Control Module
Vehicle Care
365
Instrument Panel Fuse Block (Left)
Fuses
76
Usage
Relays
Usage
Rear Defog
Electric Running Board
Engine Control Module
Cabin Coll Pump
5
78
18
23
35
DC/AC Inverter
Fuel Heater
79
80
81
Powertrain Sensor 1
Park Lamp/Front
Grille Lamp
Trailer Stop/Turn Lamp
Right
36
43
59
64
70
77
Run/Crank
82
83
Trailer Interface
Module 1
Secondary Axle Motor
A/C Clutch
FTZM – Fuel Tank Zone
Starter Motor
Starter Motor
Powertrain
Module
The left instrument panel fuse block access
door is on the driver side edge of the
instrument panel.
84
85
86
87
88
89
90
91
Trailer Battery
–
Engine Control Module
Injector B Even
O2 B Sensor
O2 A sensor
Injector A Odd
–
The vehicle may not be equipped with all of
the fuses, relays, and features shown.
Pull off the cover to access the fuse block.
A fuse puller is available in the left
instrument panel end cap.
92
Aeroshutter
366
Vehicle Care
Fuses
Usage
Fuses
F22
Usage
F1
Rear Heated Seats Left/
Right
Rear Sliding Window
F23
Driver and Passenger
Memory Seat Module
F3
F4
F5
F6
–
–
F24
F25
F26
F27
–
–
–
–
Spare
Heated and Ventilated
Seats Left/Right
F8
F9
–
Circuit
Breakers
Usage
EOCM – End Object Control
Module/Park Assist
CB1
–
F10
F11
–
–
Relays
K1
Usage
F12
F13
F14
F15
F16
F17
Passenger Power Seat
Rear Sliding Window Open
Rear Sliding Window Close
–
K2
Data Link Connector
K3
MFEG – Multifunction
Endgate Control High
–
AMP
K4
K5
–
MFEG - Multifunction
Endgate Control
MFEG – Multifunction
Endgate Control Minor
The vehicle may not be equipped with all of
the fuses, relays, and features shown.
F18
–
K6
MFEG – Multifunction
Endgate Control Low
F20
Endgate
Vehicle Care
367
Relays
K7
Usage
–
–
K8
Instrument Panel Fuse Block
(Right)
1. Push the tab at the top of fuse
block down.
2. Pull the top of the fuse block outward.
3. Reverse Steps 1–2 to reinstall.
The right instrument panel fuse block access
door is on the passenger side edge of the
instrument panel.
Pull off the cover to access the front of the
fuse block.
To access the back of the fuse block:
368
Vehicle Care
Fuses
F1
Usage
Right Doors
Fuses
F19
Usage
–
–
–
F2
Left Doors
F20
F21
F3
–
F4
ELM – Exterior Lighting
Module 2
F22
F23
F24
F25
F26
Heated Steering Wheel
–
F5
High Definition localization
Module/Instrument Panel
Cluster/Heads-up Display/
Humidity/Integrated Center
Stack
–
Spot Lamp Left/Right
USB Ports/Special
Equipment option Retained
Accessory Power
F6
F8
Front Blower
F27
F28
F30
Accessory Power Outlet/
Retained Accessory Power
Left Front Window Switch
F10
Steering Tilt (LD)/Upfitter
Vehicle Module (HD)
Accessory Power Outlet/
Battery
F11
F12
Video Processing Module/
Overhead Control Camera
Sensing and Diagnostic
Module/Automatic
Occupant Sensing
Central Gateway Module/
Telematics Control
Platform/Column Lock/
Driver Monitor System
F31
F32
Body Control Module 3
Back
Remote Function Actuator/
Wireless Charging Module/
Aux Jack/Center Stack
Module Aux Jack/Trailer
Brake Control Switch
F14
F17
F18
–
The vehicle may not be equipped with all of
the fuses, relays, and features shown.
Steering Wheel Controls
–
Vehicle Care
369
for information regarding the tire
Fuses
F33
Usage
Fuses
F57
Usage
warranty and where to get service. For
additional information refer to the tire
manufacturer.
Body Control Module 4
DC/DC Converter Battery 2
F34
F40
F41
–
F58
–
–
Circuit
Breakers
Usage
Warning
{
–
.
.
Poorly maintained and improperly
used tires are dangerous.
F42
F43
F44
F45
F46
F47
F48
Electric Park Brake Switch
1
2
3
4
Accessory Power Outlet 1
–
–
–
–
Overloading the tires can cause
overheating as a result of too
much flexing. There could be a
blowout and a serious crash. See
Vehicle Load Limits 0 204.
Shifter Interface Board
Radio Low
–
–
Relays
K1
Usage
.
.
Underinflated tires pose the same
danger as overloaded tires. The
resulting crash could cause serious
injury. Check all tires frequently to
maintain the recommended
pressure. Tire pressure should be
checked when the tires are cold.
–
Transmission Control
Module
K2
Retained Accessory Power/
Accessory 1
F49
F50
F51
Body Control Module 1
K4
K5
–
–
–
Battery 1
F52
F53
F54
F55
F56
Battery 2
Overinflated tires are more likely
to be cut, punctured, or broken by
a sudden impact — such as when
hitting a pothole. Keep tires at the
recommended pressure.
Wheels and Tires
–
Tires
Sunroof
Driver Power Seat
DC/DC Converter Battery 1
Every new GM vehicle has high-quality
tires made by a leading tire
manufacturer. See the warranty manual
(Continued)
370
.
Vehicle Care
.
.
Use tires of the same brand and tread
type on all four wheel positions.
Use only radial ply tires of the same size,
load range, and speed rating as the
original equipment tires.
equipment all-season tires can be identified
by the last two characters of this TPC code,
which will be “MS.”
Warning (Continued)
Worn or old tires can cause a
crash. If the tread is badly worn,
replace them.
Consider installing winter tires on the
vehicle if frequent driving on snow or
ice-covered roads is expected. All-season tires
provide adequate performance for most
winter driving conditions, but they may not
offer the same level of traction or
Winter tires with the same speed rating as
the original equipment tires may not be
available for H, V, W, Y, and ZR speed rated
tires. If winter tires with a lower speed
rating are chosen, never exceed the tire's
maximum speed capability.
.
Replace any tires that have been
damaged by impacts with
potholes, curbs, etc.
.
performance as winter tires on snow or
ice-covered roads. See Winter Tires 0 370.
Improperly repaired tires can cause
a crash. Only your dealer or an
authorized tire service center
should repair, replace, dismount,
and mount the tires.
Winter Tires
This vehicle was not originally equipped
with winter tires. Winter tires are designed
for increased traction on snow and
ice-covered roads. Consider installing winter
tires on the vehicle if frequent driving on ice
or snow covered roads is expected. See your
dealer for details regarding winter tire
availability and proper tire selection. Also,
see Buying New Tires 0 383.
All-Terrain Tires
This vehicle may have all-terrain or
mud-terrain tires. These tires provide good
performance on most road surfaces, weather
conditions, and for off-road driving. See
Off-Road Driving 0 197.
.
Do not spin the tires in excess of
56 km/h (35 mph) on slippery
surfaces such as snow, mud, ice,
etc. Excessive spinning may cause
the tires to explode.
The tread pattern on these tires may wear
more unevenly than other tires. Consider
rotating the tires more frequently than at
12 000 km (7,500 mi) intervals if irregular
wear is noted when the tires are inspected.
See Tire Inspection 0 381.
All-Season Tires
With winter tires, there may be decreased
dry road traction, increased road noise, and
shorter tread life. After changing to winter
tires, be alert for changes in vehicle
handling and braking.
This vehicle may come with all-season tires.
These tires are designed to provide good
overall performance on most road surfaces
and weather conditions. Original equipment
tires designed to GM's specific tire
performance criteria have a TPC specification
code molded onto the sidewall. Original
If using winter tires:
Vehicle Care
371
(2) TPC Spec (Tire Performance Criteria
Specification) : Original equipment tires
designed to GM's specific tire
manufacturer and plant code, tire size,
and date the tire was manufactured.
The TIN is molded onto both sides of
the tire, although only one side may
have the date of manufacture.
Tire Sidewall Labeling
Useful information about a tire is
molded into its sidewall. The examples
show a typical passenger vehicle tire/
full size spare tire, and light truck tire
sidewall.
performance criteria have a TPC
specification code molded onto the
sidewall. GM's TPC specifications meet
or exceed all federal safety guidelines.
(5) Tire Ply Material : The type of cord
and number of plies in the sidewall and
under the tread.
(3) DOT (Department of
Transportation) : The Department of
Transportation (DOT) code indicates that
the tire is in compliance with the U.S.
Department of Transportation Motor
Vehicle Safety Standards.
(6) Uniform Tire Quality Grading
(UTQG) : Tire manufacturers are
required to grade tires based on three
performance factors: treadwear,
traction, and temperature resistance.
For more information, see Uniform Tire
Quality Grading 0 385.
DOT Tire Date of Manufacture : The last
four digits of the TIN indicate the tire
manufactured date. The first two digits
represent the week and the last two
digits, the year. For example, the third
week of the year 2020 would have a
4-digit DOT date of 0320. Week 01 is
the first full week (Sunday through
Saturday) of each year.
(7) Maximum Cold Inflation Load
Limit : Maximum load that can be
carried and the maximum pressure
needed to support that load. For
information on recommended tire
pressure see Tire Pressure 0 375 and
Vehicle Load Limits 0 204.
Passenger Tire/Spare Tire
(1) Tire Size : The tire size code is a
combination of letters and numbers
used to define a particular tire's width,
height, aspect ratio, construction type,
and service description. See the “Tire
Size” illustration in this section.
(4) Tire Identification Number (TIN) :
The letters and numbers following the
DOT code are the Tire Identification
Number (TIN). The TIN shows the
(8) Temporary Use Only : Only use a
temporary spare tire until the road tire
is repaired and replaced. This spare tire
should not be driven on over 112 km/h
372
Vehicle Care
(70 mph), or 88 km/h (55 mph) when
pulling a trailer, with the proper
inflation pressure. See Full-Size Spare
Tire 0 398.
specification code molded onto the
sidewall. GM's TPC specifications meet
or exceed all federal safety guidelines.
(5) Tire Identification Number (TIN) :
The letters and numbers following the
DOT code are the Tire Identification
Number (TIN). The TIN shows the
manufacturer and plant code, tire size,
and date the tire was manufactured.
The TIN is molded onto both sides of
the tire, although only one side may
have the date of manufacture.
(3) Dual Tire Maximum Load :
Maximum load that can be carried and
the maximum pressure needed to
support that load when used in a dual
configuration. For information on
recommended tire pressure see Tire
Pressure 0 375 and
(6) Tire Ply Material : The type of cord
and number of plies in the sidewall and
under the tread.
Vehicle Load Limits 0 204.
(4) DOT (Department of
Transportation) : The Department of
Transportation (DOT) code indicates that
the tire is in compliance with the U.S.
Department of Transportation Motor
Vehicle Safety Standards.
(7) Single Tire Maximum Load :
Maximum load that can be carried and
the maximum pressure needed to
support that load when used as a
single. For information on
recommended tire pressure see Tire
Pressure 0 375 and
Light Truck (LT-Metric) Tire
(1) Tire Size : The tire size code is a
combination of letters and numbers
used to define a particular tire's width,
height, aspect ratio, construction type,
and service description. See the “Tire
Size” illustration in this section.
DOT Tire Date of Manufacture : The last
four digits of the TIN indicate the tire
manufactured date. The first two digits
represent the week and the last two
digits, the year. For example, the third
week of the year 2020 would have a
4-digit DOT date of 0320. Week 01 is
the first full week (Sunday through
Saturday) of each year.
Vehicle Load Limits 0 204.
Tire Designations
Tire Size
(2) TPC Spec (Tire Performance Criteria
Specification) : Original equipment tires
designed to GM's specific tire
The examples show a typical passenger
vehicle and light truck tire size.
performance criteria have a TPC
Vehicle Care
373
(4) Construction Code : A letter code is
used to indicate the type of ply
construction in the tire. The letter R
means radial ply construction; the
letter D means diagonal or bias ply
construction.
light truck tire engineered to standards
set by the U.S. Tire and Rim
Association.
(2) Tire Width : The 3-digit number
indicates the tire section width in
millimeters from sidewall to sidewall.
Passenger (P-Metric) Tire
(5) Rim Diameter : Diameter of the
wheel in inches.
(3) Aspect Ratio : A 2-digit number that
indicates the tire height-to-width
measurements. For example, if the tire
size aspect ratio is 75, as shown in
item (3) of the light truck (LT-Metric)
tire illustration, it would mean that the
tire's sidewall is 75 percent as high as it
is wide.
(1) Passenger (P-Metric) Tire : The
United States version of a metric tire
sizing system. The letter P as the first
character in the tire size means a
passenger vehicle tire engineered to
standards set by the U.S. Tire and Rim
Association.
(6) Service Description : These
characters represent the load index and
speed rating of the tire. The load index
represents the load carrying capacity a
tire is certified to carry. The speed
rating is the maximum speed a tire is
certified to carry a load.
(2) Tire Width : The 3-digit number
indicates the tire section width in
millimeters from sidewall to sidewall.
(4) Construction Code : A letter code is
used to indicate the type of ply
construction in the tire. The letter R
means radial ply construction; the
letter D means diagonal or bias ply
construction.
(3) Aspect Ratio : A 2-digit number that
indicates the tire height-to-width
measurements. For example, if the tire
size aspect ratio is 75, as shown in
item (3) of the illustration, it would
mean that the tire's sidewall is
(5) Rim Diameter : Diameter of the
wheel in inches.
Light Truck (LT-Metric) Tire
(1) Light Truck (LT-Metric) Tire : The
United States version of a metric tire
sizing system. The letters LT as the first
two characters in the tire size mean a
(6) Load Range : Load Range.
75 percent as high as it is wide.
374
Vehicle Care
(7) Service Description : The service
description indicates the load index and
speed rating of a tire. If two numbers
are given as in the example, 120/116,
then this represents the load index for
single versus dual wheel usage (single/
dual). The speed rating is the maximum
speed a tire is certified to carry a load.
Bias Ply Tire : A pneumatic tire in which
the plies are laid at alternate angles
less than 90 degrees to the centerline
of the tread.
GAWR RR : Gross Axle Weight Rating
for the rear axle. See Vehicle Load
Limits 0 204.
Intended Outboard Sidewall : The side
of an asymmetrical tire, that must
always face outward when mounted on
a vehicle.
Cold Tire Pressure : The amount of air
pressure in a tire, measured in kPa
(kilopascal) or psi (pounds per square
inch) before a tire has built up heat
from driving. See Tire Pressure 0 375.
Kilopascal (kPa) : The metric unit for air
pressure.
Tire Terminology and Definitions
DOT Markings : A code molded into the
sidewall of a tire signifying that the tire
is in compliance with the U.S.
Department of Transportation (DOT)
Motor Vehicle Safety Standards. The
DOT code includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also identify the
tire manufacturer, production plant,
brand, and date of production.
Air Pressure : The amount of air inside
the tire pressing outward on each
square inch of the tire. Air pressure is
expressed in kPa (kilopascal) or psi
(pounds per square inch).
Light Truck (LT-Metric) Tire : A tire used
on light duty trucks and some
multipurpose passenger vehicles.
Load Index : An assigned number
ranging from 1 to 279 that corresponds
to the load carrying capacity of a tire.
Aspect Ratio : The relationship of a
tire's height to its width.
Maximum Inflation Pressure : The
maximum air pressure to which a cold
tire can be inflated. The maximum air
pressure is molded onto the sidewall.
Belt : A rubber coated layer of cords
that is located between the plies and
the tread. Cords may be made from
steel or other reinforcing materials.
GVWR : Gross Vehicle Weight Rating.
See Vehicle Load Limits 0 204.
Maximum Load Rating : The load rating
for a tire at the maximum permissible
inflation pressure for that tire.
Bead : The tire bead contains steel
wires wrapped by steel cords that hold
the tire onto the rim.
GAWR FRT : Gross Axle Weight Rating
for the front axle. See Vehicle Load
Limits 0 204.
Occupant Distribution : Designated
seating positions.
Vehicle Care
375
Outward Facing Sidewall : The side of
an asymmetrical tire that has a
particular side that faces outward when
mounted on a vehicle. The side of the
tire that contains a whitewall, bears
white lettering, or bears manufacturer,
brand, and/or model name molding
that is higher or deeper than the same
moldings on the other sidewall of
the tire.
Sidewall : The portion of a tire between
the tread and the bead.
Vehicle Capacity Weight : The number
of designated seating positions
multiplied by 68 kg (150 lbs) plus the
rated cargo load. See Vehicle Load
Limits 0 204.
Speed Rating : An alphanumeric code
assigned to a tire indicating the
maximum speed at which a tire can
operate.
Vehicle Maximum Load on the Tire :
Load on an individual tire due to curb
weight, accessory weight, occupant
weight, and cargo weight.
Traction : The friction between the tire
and the road surface. The amount of
grip provided.
Vehicle Placard : A label permanently
attached to a vehicle showing the
vehicle's capacity weight and the
original equipment tire size and
recommended inflation pressure. See
“Tire and Loading Information Label”
under Vehicle Load Limits 0 204.
Tread : The portion of a tire that comes
into contact with the road.
Passenger (P-Metric) Tire : A tire used
on passenger cars and some light duty
trucks and multipurpose vehicles.
Treadwear Indicators : Narrow bands,
sometimes called wear bars, that show
across the tread of a tire when only
1.6 mm (1/16 in) of tread remains. See
When It Is Time for New Tires 0 383.
Recommended Inflation Pressure :
Vehicle manufacturer's recommended
tire inflation pressure as shown on the
tire placard. See Tire Pressure 0 375 and
Vehicle Load Limits 0 204.
Tire Pressure
Tires need the correct amount of air
pressure to operate effectively.
UTQGS (Uniform Tire Quality Grading
Standards) : A tire information system
that provides consumers with ratings
for a tire's traction, temperature, and
treadwear. Ratings are determined by
tire manufacturers using government
testing procedures. The ratings are
molded into the sidewall of the tire.
See Uniform Tire Quality Grading 0 385.
Radial Ply Tire : A pneumatic tire in
which the ply cords that extend to the
beads are laid at 90 degrees to the
centerline of the tread.
Rim : A metal support for a tire and
upon which the tire beads are seated.
376
Vehicle Care
Warning
The Tire and Loading Information label
on the vehicle indicates the original
equipment tires and the correct cold
tire inflation pressures. The
recommended pressure is the minimum
air pressure needed to support the
vehicle's maximum load carrying
capacity.
How to Check
{
Use a good quality pocket-type gauge
to check tire pressure. Proper tire
inflation cannot be determined by
looking at the tire. Check the tire
inflation pressure when the tires are
cold, meaning the vehicle has not been
driven for at least three hours or no
more than 1.6 km (1 mi).
Neither tire underinflation nor
overinflation is good. Underinflated
tires, or tires that do not have
enough air, can result in:
.
Tire overloading and overheating,
which could lead to a blowout
For additional information regarding
how much weight the vehicle can carry,
and an example of the Tire and Loading
Information label, see Vehicle Load
Limits 0 204. How the vehicle is loaded
affects vehicle handling and ride
comfort. Never load the vehicle with
more weight than it was designed to
carry.
.
.
.
Premature or irregular wear
Poor handling
Remove the valve cap from the tire
valve stem. Press the tire gauge firmly
onto the valve to get a pressure
measurement. If the cold tire inflation
pressure matches the recommended
pressure on the Tire and Loading
Information label, no further adjustment
is necessary. If the inflation pressure is
low, add air until the recommended
pressure is reached. If the inflation
pressure is high, press on the metal
stem in the center of the tire valve to
release air.
Reduced fuel economy for
internal combustion engine
vehicles
.
Reduced range for electric vehicles
Overinflated tires, or tires that have
too much air, can result in:
When to Check
.
.
.
.
Unusual wear
Poor handling
Rough ride
Check the pressure of the tires once a
month or more.
Do not forget the spare, if the vehicle
has one. See Full-Size Spare Tire 0 398
for additional information.
Needless damage from road
hazards
Re-check the tire pressure with the tire
gauge.
Vehicle Care
377
As an added safety feature, your vehicle has
been equipped with a tire pressure
monitoring system (TPMS) that illuminates a
low tire pressure telltale when one or more
of your tires is significantly under-inflated.
sequence will continue upon subsequent
vehicle start-ups as long as the malfunction
exists.
Put the valve caps back on the valve
stems to keep out dirt and moisture.
Use only valve caps designed for the
vehicle by GM. TPMS sensors could be
damaged and would not be covered by
the vehicle warranty.
When the malfunction indicator is
illuminated, the system may not be able to
detect or signal low tire pressure as
intended. TPMS malfunctions may occur for
a variety of reasons, including the
installation of replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on
your vehicle to ensure that the replacement
or alternate tires and wheels allow the
TPMS to continue to function properly.
Accordingly, when the low tire pressure
telltale illuminates, you should stop and
check your tires as soon as possible, and
inflate them to the proper pressure. Driving
on a significantly under-inflated tire causes
the tire to overheat and can lead to tire
failure. Under-inflation also reduces energy
efficiency and tire tread life, and may affect
the vehicle's handling and stopping ability.
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS)
uses radio and sensor technology to check
tire pressure levels. The TPMS sensors
monitor the air pressure in your tires and
transmit tire pressure readings to a receiver
located in the vehicle.
Please note that the TPMS is not a
substitute for proper tire maintenance, and
it is the driver's responsibility to maintain
correct tire pressure, even if under-inflation
has not reached the level to trigger
illumination of the TPMS low tire pressure
telltale.
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure
recommended by the vehicle manufacturer
on the vehicle placard or tire inflation
pressure label. (If your vehicle has tires of a
different size than the size indicated on the
vehicle placard or tire inflation pressure
label, you should determine the proper tire
inflation pressure for those tires.)
See Tire Pressure Monitor Operation 0 377.
See Radio Frequency Statement 0 438.
Tire Pressure Monitor Operation
This vehicle may have a Tire Pressure
Monitor System (TPMS). The TPMS is
designed to warn the driver when a low tire
pressure condition exists. TPMS sensors are
mounted onto each tire and wheel
assembly, excluding the spare tire and
wheel assembly. The TPMS sensors monitor
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined
with the low tire pressure telltale. When the
system detects a malfunction, the telltale
will flash for approximately one minute and
then remain continuously illuminated. This
378
Vehicle Care
the air pressure in the tires and transmit the
tire pressure readings to a receiver located
in the vehicle.
displays, see Driver Information Center (DIC)
(Base Level) 0 127 or
Driver Information Center (DIC) (Uplevel)
0 128.
Caution (Continued)
sealant is not covered by the vehicle
warranty. Always use only the GM
approved tire sealant available through
your dealer or included in the vehicle.
The low tire pressure warning light may
come on in cool weather when the vehicle is
first started, and then turn off as the vehicle
is driven. This could be an early indicator
that the air pressure is getting low and
needs to be inflated to the proper pressure.
TPMS Malfunction Light and Message
The TPMS will not function properly if one
or more of the TPMS sensors are missing or
inoperable. When the system detects a
malfunction, the low tire pressure warning
light flashes for about one minute and then
stays on for the remainder of the ignition
cycle. A DIC warning message also displays.
The malfunction light and DIC warning
message come on at each ignition cycle
until the problem is corrected. Some of the
conditions that can cause these to come
on are:
One of the road tires has been replaced
with the spare tire. The spare tire does
not have a TPMS sensor. The malfunction
light and the DIC message should go off
after the road tire is replaced and the
sensor matching process is performed
successfully. See "TPMS Sensor Matching
Process" later in this section.
When a low tire pressure condition is
detected, the TPMS illuminates the low tire
pressure warning light located on the
instrument cluster. If the warning light
comes on, stop as soon as possible and
inflate the tires to the recommended
pressure shown on the Tire and Loading
Information label. See Vehicle Load Limits
0 204.
A Tire and Loading Information label shows
the size of the original equipment tires and
the correct inflation pressure for the tires
when they are cold. See Vehicle Load Limits
0 204, for an example of the Tire and
Loading Information label and its location.
Also see Tire Pressure 0 375.
The TPMS can warn about a low tire
pressure condition but it does not replace
normal tire maintenance. See Tire Inspection
0 381, Tire Rotation 0 382, and Tires 0 369.
A message to check the pressure in a
specific tire displays in the Driver
.
Information Center (DIC). The low tire
pressure warning light and the DIC
warning message come on at each
ignition cycle until the tires are inflated
to the correct inflation pressure. If the
vehicle has DIC buttons, tire pressure levels
can be viewed. For additional information
and details about the DIC operation and
Caution
Tire sealant materials are not all the
same. A non-approved tire sealant could
damage the TPMS sensors. TPMS sensor
damage caused by using an incorrect tire
(Continued)
Vehicle Care
379
.
The TPMS sensor matching process was
not done or not completed successfully
after rotating the tires. The malfunction
light and the DIC message should go off
after successfully completing the sensor
matching process. See "TPMS Sensor
Matching Process" later in this section.
One or more TPMS sensors are missing or
damaged. The malfunction light and the
DIC message should go off when the
TPMS sensors are installed and the sensor
matching process is performed
Tire Fill Alert (If Equipped)
Warning (Continued)
This feature provides visual and audible
alerts outside the vehicle to help when
inflating an underinflated tire to the
recommended cold tire pressure.
pressure listed on the tire sidewall. See
Tire Sidewall Labeling 0 371 and
Vehicle Load Limits 0 204.
When the low tire pressure warning light
comes on:
If the tire is overinflated by more than
.
.
.
35 kPa (5 psi), the horn will sound multiple
times and the turn signal lamp will continue
to flash for several seconds after filling
stops. To release and correct the pressure,
while the turn signal lamp is still flashing,
briefly press the center of the valve stem.
When the recommended pressure is reached,
the horn sounds once.
1. Park the vehicle in a safe, level place.
2. Set the parking brake firmly.
3. Place the vehicle in P (Park).
4. Add air to the tire that is underinflated.
The turn signal lamp will flash.
successfully. See your dealer for service.
Replacement tires or wheels do not match
the original equipment tires or wheels.
Tires and wheels other than those
recommended could prevent the TPMS
from functioning properly. See Buying
New Tires 0 383.
Operating electronic devices or being near
facilities using radio wave frequencies
similar to the TPMS could cause the TPMS
sensors to malfunction.
When the recommended pressure is
reached, the horn sounds once and the
turn signal lamp will stop flashing and
briefly turn solid.
If the turn signal lamp does not flash within
15 seconds after starting to inflate the tire,
the tire fill alert has not been activated or is
not working.
Repeat these steps for all underinflated tires
that have illuminated the low tire pressure
warning light.
If the hazard warning flashers are on, the
tire fill alert visual feedback will not work
properly.
Warning
{
The TPMS will not activate the tire fill alert
properly under the following conditions:
There is interference from an external
device or transmitter.
The air pressure from the inflation device
is not sufficient to inflate the tire.
If the TPMS is not functioning properly, it
cannot detect or signal a low tire pressure
condition. See your dealer for service if the
TPMS malfunction light and DIC message
come on and stay on.
Overinflating a tire could cause the tire
to rupture and you or others could be
injured. Do not exceed the maximum
(Continued)
.
.
380
Vehicle Care
.
.
There is a malfunction in the TPMS.
There is a malfunction in the horn or turn
signal lamps.
The identification code of the TPMS
sensor is not registered to the system.
The battery of the TPMS sensor is low.
Driver Information Center (DIC) (Uplevel)
0 128. A warning message displays in the
DIC if a problem occurs during the relearn
process.
.
Trailer Tire Pressure Monitoring
Operation
.
If the tire fill alert does not operate due to
TPMS interference, move the vehicle about
1 m (3 ft) back or forward and try again.
If the tire fill alert feature is not working,
use a tire pressure gauge.
If equipped, the Trailer Tire Pressure
Monitoring System (TTPMS) is designed to
monitor the pressure of the trailer tires and
warn the driver when a low pressure
condition exists. TTPMS sensors for four tires
are provided. The system can accommodate
a trailer with up to six tires if additional
sensors are purchased from the dealer. Also,
the system can be paired with up to five
individual trailers.
TPMS Sensor Matching Process — Auto
Learn Function
Contact your trailer service center or tire
service center to have the pressure sensors
installed inside the trailer tires. The
technician should insert the sensor stem
through the hole in the trailer wheel. When
the sensor is correctly positioned, the nut on
the sensor stem should be tightened to
8 Y (6 lb ft). When mounting the trailer
tire onto the trailer wheel be careful not to
damage the sensor.
Each TPMS sensor has a unique
identification code. The identification code
needs to be matched to a new tire/wheel
position after rotating the tires or replacing
one or more of the TPMS sensors. When a
tire is installed, the vehicle must be
stationary for about 20 minutes before
the system recalculates. The following
relearn process takes up to 10 minutes,
driving at a minimum speed of 20 km/h
(12 mph). A dash (-) or pressure value will
display in the DIC. See Driver Information
Center (DIC) (Base Level) 0 127 or
Prior to use, the vehicle must learn the
sensors by following the learning process.
See Trailering App 0 319.
The Trailering App can be used to view the
tire pressures after the recommended trailer
tire pressures have been entered. Refer to
the trailer tire placard on the trailer or the
trailer tire sidewall for the recommended
tire pressure.
Vehicle Care
381
The system is compatible with trailer tires
that have placard pressure values from 103 -
689 kpa (15 - 100 psi). The hole in the wheel
for the tire stem must be either 11.43 mm
(0.453 in) or 15.88 mm (0.625 in) in
diameter. Use of the pressure sensors on a
wheel with a different stem hole size could
result in loss of air from the tire.
performed successfully. See "TTPMS
Sensor Learning Process" under Trailering
App 0 319.
Operating electronic devices or being near
facilities using radio wave frequencies
similar to the TTPMS could cause
interference to the TTPMS which could
cause loss of signal reception from the
sensor.
If the system does not receive the signal
from an individual sensor, an error
message may not occur until the vehicle
has been driver for a period of time.
TTPMS Malfunction Message
The TTPMS will not function properly if one
or more of the trailer tire sensors are
missing or inoperable. If the system detects
a malfunction, a DIC message indicates that
the system requires service. Some of the
conditions that can cause the service
message to occur are:
.
.
If a low trailer tire pressure condition is
detected, the TTPMS displays a warning
message on the DIC. If the warning message
is displayed, stop as soon as possible and
inflate the tires to the recommended
pressure shown on the tire placard on the
trailer.
.
One of the trailer tires has been replaced
with the spare tire which does not have a
learned TTPMS sensor. The DIC message
should turn off after the pressure sensor
is installed in the tire, and the learning
process is performed successfully. See
"TTPMS Sensor Learning Process" under
Trailering App 0 319.
If the TTPMS is not functioning properly, it
cannot detect or signal a low tire condition.
See your dealer for service if the DIC
message comes on and stays on when the
trailer tire pressures have been checked and
determined to be correct.
In addition, the TTPMS monitors the
temperature of the trailer tires. If the
system detects a high temperature on one
or more of the trailer tires, a warning
message will be displayed on the DIC. If this
warning message is displayed, stop as soon
as possible, and inspect the overheated
trailer tire. Common causes for high trailer
tire temperature are underinflation,
overloading, or tire damage.
.
.
The TTPMS sensor learning process was
not done or not completed successfully.
The DIC message should go off after
successfully completing the sensor
learning process. See "TTPMS Sensor
Learning Process" under Trailering App
0 319.
One or more TTPMS sensors are missing
or damaged. The DIC message should go
off when the TTPMS sensors are installed
and the sensor learning process is
Tire Inspection
We recommend that the tires, including
the spare tire, if the vehicle has one, be
inspected for signs of wear or damage
at least once a month.
Replace the tire if:
.
The indicators at three or more
places around the tire can be seen.
382
Vehicle Care
.
There is cord or fabric showing
through the tire's rubber.
The tread or sidewall is cracked, cut,
or snagged deep enough to show
cord or fabric.
See When It Is Time for New Tires
0 383 and
Wheel Replacement 0 386.
Reset the Tire Pressure Monitor System.
See Tire Pressure Monitor Operation
0 377.
.
Check that all wheel nuts are properly
tightened. See “Wheel Nut Torque”
under Capacities and Specifications
0 426 and “Removing the Flat Tire and
Installing the Spare Tire” under Tire
Changing 0 389.
.
.
The tire has a bump, bulge, or split.
The tire has a puncture, cut, or other
damage that cannot be repaired well
because of the size or location of the
damage.
Warning
{
Tire Rotation
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
cause wheel nuts to become loose
over time. The wheel could come off
and cause a crash. When changing a
wheel, remove any rust or dirt from
places where the wheel attaches to
the vehicle. In an emergency, a cloth
or paper towel can be used; however,
use a scraper or wire brush later to
remove all rust or dirt.
Tires should be rotated according to the
interval listed in the maintenance
schedule. See Maintenance Schedule
0 417.
Use this rotation pattern when rotating
the tires.
Tires are rotated to achieve a more
uniform wear for all tires. The first
rotation is the most important.
Do not include the spare tire in the tire
rotation.
Adjust the front and rear tires to the
recommended inflation pressure on the
Tire and Loading Information label after
the tires have been rotated. See Tire
Pressure 0 375 and
Anytime unusual wear is noticed, rotate
the tires as soon as possible, check for
proper tire inflation pressure, and check
for damaged tires or wheels. If the
unusual wear continues after the
Vehicle Load Limits 0 204.
rotation, check the wheel alignment.
Vehicle Care
383
Number (TIN) molded into one side of the
tire sidewall. The last four digits of the TIN
indicate the tire manufactured date. The
first two digits represent the week and the
last two digits, the year. For example, the
third week of the year 2020 would have a
4-digit DOT date of 0320. Week 01 is the
first full week (Sunday through Saturday) of
each year.
Lightly coat the inner diameter of the
wheel hub opening with wheel bearing
grease after a wheel change or tire
rotation to prevent corrosion or rust
build-up.
Warning
{
Do not apply grease to the wheel
mounting surface, wheel conical
seats, or the wheel nuts or bolts.
Grease applied to these areas could
cause a wheel to become loose or
come off, resulting in a crash.
Vehicle Storage
Tires age when stored normally mounted on
a parked vehicle. Park a vehicle that will be
stored for at least a month in a cool, dry,
clean area away from direct sunlight to slow
aging. This area should be free of grease,
gasoline, or other substances that can
deteriorate rubber.
Treadwear indicators are one way to tell
when it is time for new tires. Treadwear
indicators appear when the tires have only
1.6 mm (1/16 in) or less of tread remaining.
See Tire Inspection 0 381 and
When It Is Time for New Tires
Factors, such as maintenance, temperatures,
driving speeds, vehicle loading, and road
conditions affect the wear rate of the tires.
Tire Rotation 0 382.
Parking for an extended period can cause
flat spots on the tires that may result in
vibrations while driving. When storing a
vehicle for at least a month, remove the
tires or raise the vehicle to reduce the
weight from the tires.
The rubber in tires ages over time. This also
applies to the spare tire, if the vehicle has
one, even if it is never used. Multiple factors
including temperatures, loading conditions,
and inflation pressure maintenance affect
how fast aging takes place. GM recommends
that tires, including the spare if equipped,
be replaced after six years, regardless of
tread wear. To identify the age of a tire, use
the tire manufacture date, which is the last
four digits of the DOT Tire Identification
Buying New Tires
GM has developed and matched specific
tires for the vehicle. The original
equipment tires installed were designed
384
Vehicle Care
to meet General Motors Tire
replaced at the same time. If proper
rotation and maintenance have been
done, all four tires should wear out at
about the same time. However, if it is
necessary to replace only one axle set
of worn tires, place the new tires on
the rear axle. See Tire Rotation 0 382.
Warning
{
Performance Criteria Specification (TPC
Spec) system rating. When replacement
tires are needed, GM strongly
recommends buying tires with the same
TPC Spec rating.
Using bias-ply tires on the vehicle
may cause the wheel rim flanges to
develop cracks after many miles of
driving. A tire and/or wheel could fail
suddenly and cause a crash. Use only
radial-ply tires with the wheels on
the vehicle.
GM's exclusive TPC Spec system
considers over a dozen critical
Warning
{
specifications that impact the overall
performance of the vehicle, including
brake system performance, ride and
handling, traction control, and tire
pressure monitoring performance. GM's
TPC Spec number is molded onto the
tire's sidewall near the tire size. If the
tires have an all-season tread design,
the TPC Spec number will be followed
by MS for mud and snow. See Tire
Sidewall Labeling 0 371 for additional
information.
Tires could explode during improper
service. Attempting to mount or
dismount a tire could cause injury or
death. Only your dealer or authorized
tire service center should mount or
dismount the tires.
Winter tires with the same speed rating
as the original equipment tires may not
be available for H, V, W, Y and ZR
speed rated tires. Never exceed the
winter tires’ maximum speed capability
when using winter tires with a lower
speed rating.
Warning
{
If the vehicle tires must be replaced
with a tire that does not have a TPC
Spec number, make sure they are the
same size, load range, speed rating, and
construction (radial) as the original
tires.
Mixing tires of different sizes (other
than those originally installed on the
vehicle), brands, tread patterns,
GM recommends replacing worn tires in
complete sets of four. Uniform tread
depth on all tires will help to maintain
the performance of the vehicle. Braking
and handling performance may be
or types may cause loss of vehicle
control, resulting in a crash or other
vehicle damage. Use the correct size,
brand, and type of tire on all wheels.
The Tire and Loading Information label
indicates the original equipment tires
on the vehicle. See Vehicle Load Limits
0 204.
adversely affected if all the tires are not
Vehicle Care
385
Quality grades can be found where
Different Size Tires and Wheels
Uniform Tire Quality Grading
The following information relates to the
system developed by the United States
National Highway Traffic Safety
Administration (NHTSA), which grades
tires by treadwear, traction, and
temperature performance. This applies
only to vehicles sold in the United
States. The grades are molded on the
sidewalls of most passenger car tires.
The Uniform Tire Quality Grading
(UTQG) system does not apply to deep
tread, winter tires, compact spare tires,
tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
applicable on the tire sidewall between
tread shoulder and maximum section
width. For example:
If wheels or tires are installed that are a
different size than the original equipment
wheels and tires, vehicle performance,
including its braking, ride and handling
characteristics, stability, and resistance to
rollover may be affected. If the vehicle has
electronic systems such as antilock brakes,
rollover airbags, traction control, electronic
stability control, or All-Wheel Drive, the
performance of these systems can also be
affected.
Treadwear 200 Traction AA Temperature A
All Passenger Car Tires Must Conform to
Federal Safety Requirements In Addition
To These Grades.
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the
tire when tested under controlled
conditions on a specified government
test course. For example, a tire graded
150 would wear one and one-half (1½)
times as well on the government course
as a tire graded 100. The relative
performance of tires depends upon the
actual conditions of their use, however,
and may depart significantly from the
norm due to variations in driving habits,
service practices and differences in road
characteristics and climate.
Warning
{
If different sized wheels are used, there
may not be an acceptable level of
performance and safety if tires not
recommended for those wheels are
selected. This increases the chance of a
crash and serious injury. Only use GM
specific wheel and tire systems developed
for the vehicle, and have them properly
installed by a GM certified technician.
While the tires available on General
Motors passenger cars and light trucks
may vary with respect to these grades,
they must also conform to federal
safety requirements and additional
General Motors Tire Performance
Criteria (TPC) standards.
See Buying New Tires 0 383 and
Accessories and Modifications 0 333.
386
Vehicle Care
such as troughs or ruts, is normal. If the
vehicle is vibrating when driving on a
smooth road, the tires and wheels may
need to be rebalanced. See your dealer for
proper diagnosis.
Traction
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Safety
The traction grades, from highest to
lowest, are AA, A, B, and C. Those
grades represent the tire's ability to
stop on wet pavement as measured
under controlled conditions on specified
government test surfaces of asphalt and
concrete. A tire marked C may have
poor traction performance. Warning:
The traction grade assigned to this tire
is based on straight-ahead braking
traction tests, and does not include
acceleration, cornering, hydroplaning,
or peak traction characteristics.
Standard No. 109. Grades B and A
represent higher levels of performance
on the laboratory test wheel than the
minimum required by law. Warning:
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive
loading, either separately or in
Wheel Replacement
Replace any wheel that is bent, cracked,
or badly rusted or corroded. If wheel nuts
keep coming loose, the wheel, wheel bolts,
and wheel nuts should be replaced. If the
wheel leaks air, replace it. Some aluminum
wheels can be repaired. See your dealer if
any of these conditions exist.
combination, can cause heat buildup
and possible tire failure.
Your dealer will know the kind of wheel that
is needed.
Wheel Alignment and Tire
Balance
The tires and wheels were aligned and
balanced at the factory to provide the
longest tire life and best overall
Temperature
Each new wheel should have the same
load-carrying capacity, diameter, width,
offset, and be mounted the same way as
the one it replaces.
The temperature grades are A (the
highest), B, and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled conditions
on a specified indoor laboratory test
wheel. Sustained high temperature can
cause the material of the tire to
Replace wheels, wheel bolts, wheel nuts,
or Tire Pressure Monitor System (TPMS)
sensors with new GM original equipment
parts.
performance. Adjustments to wheel
alignment and tire balancing are not
necessary on a regular basis. Consider an
alignment check if there is unusual tire wear
or the vehicle is significantly pulling to one
side or the other. Some slight pull to the
left or right, depending on the crown of the
road and/or other road surface variations
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. The grade C
Vehicle Care
Caution
If the vehicle is equipped with a tire size
other than 275/50R22, 275/60R20,
387
Tire Chains
Warning
{
Using the wrong replacement wheels,
wheel bolts, or wheel nuts can be
dangerous. It could affect the braking and
handling of the vehicle. Tires can lose air
and cause loss of control, resulting in a
crash. Always use the correct wheel,
wheel bolts, and wheel nuts for
replacement.
Warning
{
If the vehicle has 275/50R22, 275/60R20,
LT265/60R20, LT265/70R17, LT275/65R18,
or LT275/70R18 size tires, do not use tire
chains. There is not enough clearance.
Tire chains used on a vehicle without the
proper amount of clearance can cause
damage to the brakes, suspension,
or other vehicle parts. The area damaged
by the tire chains could cause loss of
control and a crash.
LT265/60R20, LT265/70R17, LT275/65R18,
or LT275/70R18 use tire chains only where
legal and only when necessary. Use
chains that are the proper size for the
tires. Install them on the tires of the rear
axle. Do not use chains on the tires of
the front axle. Tighten them as tightly as
possible with the ends securely fastened.
Drive slowly and follow the chain
manufacturer's instructions. If the chains
contact the vehicle, stop and retighten
them. If the contact continues, slow
down until it stops. Driving too fast or
spinning the wheels with chains on will
damage the vehicle.
Warning
{
Replacing a wheel with a used one is
dangerous. How it has been used or how
far it has been driven may be unknown.
It could fail suddenly and cause a crash.
When replacing wheels, use a new GM
original equipment wheel.
Use another type of traction device only
if its manufacturer recommends it for the
vehicle's tire size combination and road
conditions. Follow that manufacturer's
instructions. To avoid vehicle damage,
drive slow and readjust or remove the
traction device if it contacts the vehicle.
Do not spin the wheels.
If a Tire Goes Flat
Caution
It is unusual for a tire to blow out while
driving, especially if the tires are maintained
properly. See Tires 0 369. If air goes out of
a tire, it is much more likely to leak out
slowly. But if there ever is a blowout, here
are a few tips about what to expect and
what to do:
The wrong wheel can also cause
If traction devices are used, install them
on the rear tires.
problems with bearing life, brake cooling,
speedometer or odometer calibration,
headlamp aim, bumper height, vehicle
ground clearance, and tire or tire chain
clearance to the body and chassis.
388
Vehicle Care
If a front tire fails, the flat tire creates a
drag that pulls the vehicle toward that side.
Take your foot off the accelerator pedal and
grip the steering wheel firmly. Steer to
maintain lane position, and then gently
brake to a stop, well off the road,
if possible.
Warning
Warning
{
{
Lifting a vehicle and getting under it to
do maintenance or repairs is dangerous
without the appropriate safety equipment
and training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
anything else, you or others could be
badly injured or killed if the vehicle slips
off the jack. If a jack is provided with the
vehicle, only use it for changing a
flat tire.
Changing a tire can be dangerous. The
vehicle can slip off the jack and roll over
or fall causing injury or death. Find a
level place to change the tire. To help
prevent the vehicle from moving:
A rear blowout, particularly on a curve, acts
much like a skid and may require the same
correction as used in a skid. Stop pressing
the accelerator pedal and steer to straighten
the vehicle. It may be very bumpy and
noisy. Gently brake to a stop, well off the
road, if possible.
1. Set the parking brake firmly.
2. Shift the vehicle to P (Park).
3. For vehicles with four-wheel drive
with an N (Neutral) transfer case
position, be sure the transfer case is
in a drive gear — not in N (Neutral).
If a tire goes flat, avoid further tire and
wheel damage by driving slowly to a level
place, well off the road, if possible. Turn on
the hazard warning flashers. See Hazard
Warning Flashers 0 141.
4. Turn off the engine and do not
restart while the vehicle is raised.
Warning
{
Driving on a flat tire will cause
permanent damage to the tire.
5. Do not allow passengers to remain
in the vehicle.
Re-inflating a tire after it has been driven
on while severely underinflated or flat
may cause a blowout and a serious crash.
Never attempt to re-inflate a tire that has
been driven on while severely
underinflated or flat. Have your dealer or
an authorized tire service center repair or
replace the flat tire as soon as possible.
6. Place wheel blocks, if equipped, on
both sides of the tire at the opposite
corner of the tire being changed.
If your vehicle is loaded at or near
maximum cargo capacity, it may be difficult
to fit the jack under the vehicle due to the
environment (shoulder slope, road debris,
etc.). Removal of some weight may improve
the ability to fit the jack under the vehicle
at the correct jacking location.
Vehicle Care
389
When the vehicle has a flat tire (2), use the
following example as a guide to assist in the
placement of the wheel blocks (1),
if equipped.
2. Turn the wing nut counterclockwise to
remove the wheel blocks and the wheel
block retainer.
Tire Changing
Removing the Spare Tire and Tools
3. Turn the wing nut used to retain the
storage bag and tools counterclockwise
to remove it.
Use the jack handle extensions and the
wheel wrench to remove the
underbody-mounted spare tire.
1. Wheel Block (If Equipped)
2. Flat Tire
1. Jack
2. Jack Knob
The following information explains how to
use the jack and change a tire.
3. Tool Kit
4. Wing Nut Retaining Tool Kit
5. Wheel Blocks
6. Wing Nut Retaining Wheel Blocks
1. Spare Tire (Valve Stem Pointed Down)
2. Tire/Wheel Retainer
3. Hoist Cable
The equipment is under the second row
seats, if equipped, or behind the front row
seats on regular cab models.
4. Hoist Assembly
5. Hoist Shaft
6. Jack Handle Extensions
1. Turn the knob on the jack
counterclockwise to lower the jack head
to release the jack from its holder.
390
Vehicle Care
7. Wheel Wrench
8. Hoist Shaft Access Hole Cover
9. Hoist Shaft Access Hole
4. Insert the hoist end (open end) (10) of
the extension through the hole (9) in the
rear bumper.
10. Hoist End of Extension Tool
Do not use the chiseled end of the wheel
wrench.
1. Open the Hoist Shaft Access Hole Cover
on the rear bumper (8).
Be sure the hoist end of the
extension (10) connects to the hoist
shaft. The ribbed square end of the
extension is used to lower the spare tire.
5. Turn the wheel wrench counterclockwise
to lower the spare tire to the ground.
Continue to turn the wheel wrench until
the spare tire can be pulled out from
under the vehicle.
Spare Tire Cable (If Equipped)
3. If the vehicle is equipped with a spare
tire cable disconnect the cable from the
attachment on the frame by unclipping
it from the frame attachment bracket.
6. Pull the spare tire out from under the
vehicle.
2. Assemble the wheel wrench (7) and the
two jack handle extensions (6), as shown.
7. Tilt the tire toward the vehicle with
some slack in the cable to access the
tire/wheel retainer.
Vehicle Care
391
9. If equipped with a spare tire cable
remove the cable from the spare tire by
passing the clip through the looped end
of the cable.
The tools you will be using include the
jack (1), the wheel blocks (2), the jack
handle (3), the jack handle extensions (4),
and the wheel wrench (5).
1. Do a safety check before proceeding. See
If a Tire Goes Flat 0 387.
Removing the Flat Tire and Installing the
Spare Tire
Use the following pictures and instructions
to remove the flat tire and raise the vehicle.
Tilt the retainer and pull it through the
center of the wheel along with the cable
and spring.
8. Put the spare tire near the flat tire.
2. If the vehicle has wheel nut caps, loosen
them by turning the wheel wrench
counterclockwise.
1. Jack
2. Wheel Blocks
3. Jack Handle
4. Jack Handle Extensions
5. Wheel Wrench
If the vehicle has a center cap with
wheel nut caps, the wheel nut caps are
designed to stay with the center cap
after they are loosened. Remove the
entire center cap.
392
Vehicle Care
If the wheel has a smooth center cap,
concealing access to the wheel nuts,
place the chisel end of the wheel wrench
in the slot on the wheel, and gently pry
it out.
Front Position
3. Use the wheel wrench and turn it
counterclockwise to loosen the wheel
nuts. Do not remove the wheel nuts yet.
4. If the flat tire is on the front of the
vehicle, position the jack under the
bracket attached to the vehicle's frame,
behind the flat tire, as shown.
If the wheel’s center cap does not
conceal the wheel nuts, the center cap
may remain during wheel removal. If the
removed wheel is to be stowed in the
hoist, the cap needs to be detached from
the wheel. Access the wheel from the
back side, and use a jack handle
Warning
{
To avoid personal injury and vehicle
damage, disable the power assist steps
before using a jack or placing an object
under the vehicle. See Power Assist Steps
0 28.
extension to push out the center cap.
Vehicle Care
393
Warning
{
Raising the vehicle with the jack
improperly positioned can damage the
vehicle and even make the vehicle fall. To
help avoid personal injury and vehicle
damage, be sure to fit the jack lift head
into the proper location before raising
the vehicle.
Warning
{
Rear Position
7. Remove all the wheel nuts and take off
the flat tire.
The jack has a feature to limit its travel
to prevent overextension. When the
height limit is reached, an increase in
resistance if felt when attempting to
raise the jack farther. Raising the jack
past the height limit can damage the jack
pin and cause the jack to lock into an
overextended position or not lower fully.
Do not attempt to force the jack higher
once the height limit is reached.
5. If the flat tire is on the rear, position the
jack under the rear axle about 5 cm
(2 in) inboard of the shock absorber
bracket.
Warning
{
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
cause wheel nuts to become loose
over time. The wheel could come off
and cause a crash. When changing a
wheel, remove any rust or dirt from
places where the wheel attaches to
the vehicle. In an emergency, a cloth
or paper towel can be used; however,
use a scraper or wire brush later to
remove all rust or dirt.
Warning
{
Getting under a vehicle when it is lifted
on a jack is dangerous. If the vehicle slips
off the jack, you could be badly injured
or killed. Never get under a vehicle when
it is supported only by a jack.
6. Turn the wheel wrench clockwise to raise
the vehicle. Raise the vehicle far enough
off the ground so there is enough room
for the spare tire to fit under the
wheel well.
394
Vehicle Care
11. Tighten each wheel nut by hand. Then
use the wheel wrench to tighten the
nuts until the wheel is held against
the hub.
Warning
{
Wheel nuts that are improperly or
incorrectly tightened can cause the
wheels to become loose or come off. The
wheel nuts should be tightened with a
torque wrench to the proper torque
specification after replacing. Follow the
torque specification supplied by the
aftermarket manufacturer when using
accessory locking wheel nuts. See
Capacities and Specifications 0 426 for
original equipment wheel nut torque
specifications.
12. Turn the wheel wrench counterclockwise
to lower the vehicle. Lower the jack
completely.
Warning
{
If wheel studs are damaged, they can
break. If all the studs on a wheel broke,
the wheel could come off and cause a
crash. If any stud is damaged because of
a loose-running wheel, it could be that all
of the studs are damaged. To be sure,
replace all studs on the wheel. If the stud
holes in a wheel have become larger, the
wheel could collapse in operation. Replace
any wheel if its stud holes have become
larger or distorted in any way. Inspect
hubs and hub‐piloted wheels for damage.
Because of loose running wheels, piloting
pad damage may occur and require
8. Remove any rust or dirt from the wheel
bolts, mounting surfaces, and spare
wheel.
9. Install the spare tire.
Caution
Improperly tightened wheel nuts can lead
to brake pulsation and rotor damage. To
avoid expensive brake repairs, evenly
tighten the wheel nuts in the proper
sequence and to the proper torque
specification. See Capacities and
Warning
{
Never use oil or grease on bolts or nuts
because the nuts might come loose. The
vehicle's wheel could fall off, causing a
crash.
Specifications 0 426 for the wheel nut
torque specification.
replacement of the entire hub, for proper
centering of the wheels. When replacing
studs, hubs, wheel nuts or wheels, be
sure to use GM original equipment parts.
10. Put the wheel nuts back on with the
rounded end of the nuts toward the
wheel.
Vehicle Care
Caution
395
Storing a Flat or Spare Tire and Tools
The tire hoist can be damaged if there is
no tension on the cable when using it. To
have the necessary tension, the spare or
road tire and wheel assembly must be
installed on the tire hoist to use it.
Warning
{
Storing a jack, a tire, or other equipment
in the passenger compartment of the
vehicle could cause injury. In a sudden
stop or collision, loose equipment could
strike someone. Store all these in the
proper place.
Warning
{
13. Tighten the nuts firmly in a crisscross
sequence, as shown, by turning the
wheel wrench clockwise.
An improperly stored spare tire could
come loose and cause a crash. To avoid
personal injury or property damage,
always store the spare tire when the
vehicle is parked on a level surface.
Warning
{
When reinstalling the regular wheel and tire,
also reinstall either the center cap,
Failure to follow these tire storage
instructions carefully could result in
personal injury or property damage if the
hoist cable fails or if the tire comes loose.
Make sure the tire is stored securely
before driving.
or bolt-on hub cap, depending on what the
vehicle is equipped with. For center caps,
place the cap on the wheel and tap it into
place until it seats flush with the wheel. The
cap only goes on one way. Be sure to line
up the tab on the center cap with the
indentation on the wheel. For bolt-on hub
caps, align the plastic nut caps with the
wheel nuts and then tighten by hand. Then
use the wheel wrench to tighten.
Store the tire under the rear of the vehicle
in the spare tire carrier.
Caution
Storing an aluminum wheel with a flat
tire under your vehicle for an extended
period of time or with the valve stem
pointing up can damage the wheel.
Always stow the wheel with the valve
stem pointing down and have the wheel/
tire repaired as soon as possible.
396
Vehicle Care
cable through the looped end. The excess
cable wire should be on the valve stem
side of the spare tire.
2. Put the tire on the ground at the rear of
the vehicle with the valve stem pointed
down, and to the rear.
3. Pull the cable and spring through the
center of the wheel. Tilt the wheel
retainer plate down and through the
center wheel.
Make sure the retainer is fully seated
across the underside of the wheel.
11. Spare Tire Cable (If Equipped)
1. Spare Tire (Valve Stem Pointed Down)
2. Tire/Wheel Retainer
3. Hoist Cable
4. Hoist Assembly
5. Hoist Shaft
6. Jack Handle Extensions
7. Wheel Wrench
8. Hoist Shaft Access Hole Cover
9. Hoist Shaft Access Hole
10. Hoist End of Extension Tool
4. Attach the wheel wrench (7) and
extensions (6) together, as shown.
1. If equipped with a spare tire cable,
reinstall the cable to the spare wheel by
looping the cable around a wheel vent
window then pass the clip end of the
Vehicle Care
397
Caution
Use of an air wrench or other power
tools with the hoist mechanism is not
recommended and could damage the
system. Use only the tools supplied with
the hoist mechanism.
7. If equipped with a spare tire cable, orient
the cable by rotating the spare tire so
that the cable is by the frame
9. Make sure the tire is stored securely.
Push, pull, and then try to turn the tire.
If the tire moves, use the wheel wrench
to tighten the cable.
attachment location.
8. Raise the tire fully against the underside
of the vehicle by turning the wheel
wrench clockwise until you hear two
clicks or feel it skip twice. You cannot
overtighten the cable.
5. Insert the hoist end (10) through the
hole (9) in the rear bumper and onto the
hoist shaft.
Do not use the chiseled end of the wheel
wrench.
6. Raise the tire part way upward. Make
sure the retainer is seated in the wheel
opening.
398
Vehicle Care
If equipped with a spare tire cable,
reattach the clip to the frame
attachment bracket. Note that there may
be slack in the cable.
Full-Size Spare Tire
If this vehicle came with a full-size spare
tire, it was fully inflated when new,
however, it can lose air over time. Check the
inflation pressure regularly. See Tire Pressure
0 375 and Vehicle Load Limits 0 204 for
information regarding proper tire inflation
and loading the vehicle. For instructions on
how to remove, install, or store a spare tire,
see Tire Changing 0 389.
Repeat this tightness check procedure
when checking the spare tire pressure
according to the scheduled maintenance
information or any time the spare tire is
handled due to service of other
components.
After installing the spare tire on the vehicle,
stop as soon as possible and check that the
spare is correctly inflated. The spare tire is
made to perform well at speeds up to
112 km/h (70 MPH) at the recommended
inflation pressure, so you can finish
your trip.
Incorrectly Stored
10. Close the Hoist Shaft Access Hole Cover.
Have the damaged or flat road tire repaired
or replaced and installed back onto the
vehicle as soon as possible so the spare tire
will be available in case it is needed again.
Do not mix tires and wheels of different
sizes, because they will not fit. Keep the
spare tire and its wheel together.
Correctly Stored
Return the jack and tools to their original
location in the vehicle. See “Removing the
Spare Tire and Tools.”
Vehicle Care
Warning
399
pressure. Repair and replace the road tire as
soon as it is convenient, and stow the spare
tire for future use.
Caution
{
If the vehicle has four-wheel drive and a
different size spare tire is installed, do
not drive in four-wheel drive until the flat
tire is repaired and/or replaced. The
vehicle could be damaged and the repairs
would not be covered by the warranty.
Never use four-wheel drive when a
different size spare tire is installed on the
vehicle.
Batteries can hurt you. They can be
dangerous because:
Jump Starting
.
.
They contain acid that can burn you.
They contain gas that can explode or
ignite.
Jump Starting - North America
For more information about the vehicle
battery, see Battery - North America 0 352.
.
They contain enough electricity to
burn you.
If the vehicle's battery (or batteries) has run
down, you may want to use another vehicle
and some jumper cables to start your
vehicle. Be sure to use the following steps
to do it safely.
If you do not follow these steps exactly,
some or all of these things can hurt you.
The vehicle may have a different size spare
tire than the road tires originally installed
on the vehicle. This spare tire was developed
for use on this vehicle, so it is all right to
drive on it. If the vehicle has four-wheel
drive and a different size spare tire is
Caution
Ignoring these steps could result in costly
damage to the vehicle that would not be
covered by the vehicle warranty. Trying
to start the vehicle by pushing or pulling
it will not work, and it could damage the
vehicle.
Warning
{
WARNING: Battery posts, terminals and
related accessories can expose you to
chemicals including lead and lead
compounds, which are known to the
State of California to cause cancer and
birth defects or other reproductive harm.
Wash hands after handling. For more
information go to
installed, drive only in two-wheel drive.
If the vehicle has a spare tire that does not
match the original road tires and wheels in
size and type, do not include the spare in
the tire rotation.
Caution
If equipped with a temporary use full-size
spare tire, it is indicated on the tire sidewall.
See Tire Sidewall Labeling 0 371. This spare
tire should not be driven on over 112 km/h
(70 mph), or 88 km/h (55 mph) when
If the jumper cables are connected or
removed in the wrong order, electrical
shorting may occur and damage the
vehicle. The repairs would not be covered
(Continued)
See California Proposition 65 Warning 0 1.
pulling a trailer, at the proper inflation
400
Vehicle Care
The good battery positive (+) terminal and
the good battery negative (–) terminal are
on the battery of the vehicle providing the
jump start.
one battery, using the battery that is
closer to the starter will reduce electrical
resistance. This is located on the
passenger side, in the rear of the engine
compartment.
Caution (Continued)
by the vehicle warranty. Always connect
and remove the jumper cables in the
correct order, making sure that the cables
do not touch each other or other metal.
The discharged battery positive (+) terminal
and discharged battery negative (–)
grounding point are on the passenger side
of the vehicle.
3. Get the vehicles close enough so the
jumper cables can reach, but be sure the
vehicles are not touching each other.
If they are, it could cause an unwanted
ground connection. You would not be
able to start your vehicle, and the bad
grounding could damage the electrical
systems.
The discharged battery positive (+) terminal
is under a cover. Open the cover to expose
the terminal.
1. Check the other vehicle. It must have a
12-volt battery with a negative ground
system.
To avoid the possibility of the vehicles
rolling, set the parking brake firmly on
both vehicles involved in the jump start
procedure. Put the automatic
Caution
If the other vehicle does not have a
12-volt system with a negative ground,
both vehicles can be damaged. Only use
a vehicle that has a 12-volt system with a
negative ground for jump starting.
transmission in P (Park) before setting
the parking brake. If you have a
four-wheel-drive vehicle, be sure the
transfer case is in a drive gear, not in
N (Neutral).
Connection Points and Sequence
1. Discharged Battery Positive (+)
Terminal
2. Good Battery Positive (+) Terminal
3. Good Battery Negative (−) Terminal
4. Discharged Battery Negative (−)
Grounding Point
Caution
2. If you have a vehicle with a diesel
engine with two batteries, you should
know before you begin that, especially in
cold weather, you may not be able to
get enough power from a single battery
in another vehicle to start your diesel
engine. If your vehicle has more than
If any accessories are left on or plugged
in during the jump starting procedure,
they could be damaged. The repairs
would not be covered by the vehicle
(Continued)
Vehicle Care
401
vehicle has one. Negative (−) will go to a
heavy, unpainted metal engine part or to
a remote negative (−) terminal if the
vehicle has one.
Caution (Continued)
Warning
{
warranty. Whenever possible, turn off or
unplug all accessories on either vehicle
when jump starting.
Using a match near a battery can cause
battery gas to explode. People have been
hurt doing this, and some have been
blinded. Use a flashlight if you need
more light.
Do not connect positive (+) to negative
(−) or you will get a short that would
damage the battery and maybe other
parts too. And do not connect the
negative (−) cable to the negative (−)
terminal on the dead battery because
this can cause sparks.
4. Turn the ignition off on both vehicles.
Unplug unnecessary accessories plugged
into the accessory power outlets. Turn
off the radio and all the lamps that are
not needed. This will avoid sparks and
help save both batteries. And it could
save the radio!
Battery fluid contains acid that can burn
you. Do not get it on you. If you
accidentally get it in your eyes or on
your skin, flush the place with water and
get medical help immediately.
7. Connect one end of the red positive (+)
cable to the discharged battery
positive (+) terminal.
5. Open the hood on the other vehicle and
locate the positive (+) and negative (−)
terminal locations on that vehicle.
8. Do not let the other end touch metal.
Connect the other end of the positive (+)
cable to the good battery positive (+)
terminal. Use a remote positive (+)
terminal if the vehicle has one.
Warning
{
Fans or other moving engine parts can
injure you badly. Keep your hands away
from moving parts once the engine is
running.
Warning
{
An electric fan can start up even when
the engine is not running and can injure
you. Keep hands, clothing, and tools
away from any underhood electric fan.
9. Connect one end of the black negative
(−) cable to the good battery negative
(−) terminal. Use a remote negative (−)
terminal if the vehicle has one.
6. Check that the jumper cables do not
have loose or missing insulation. If they
do, you could get a shock. The vehicles
could be damaged too.
Do not let the other end touch anything
until the next step.
Before you connect the cables, here are
some basic things you should know.
Positive (+) will go to positive (+) or to a
remote positive (+) terminal if the
10. Connect the other end of the negative
(−) cable to the discharged battery
negative (−) grounding point.
402
Vehicle Care
11. Start the vehicle with the good battery
and run the engine for a while.
Contact a professional towing service if the
disabled vehicle must be transported. GM
recommends a flatbed tow truck to
transport a disabled vehicle. Use ramps to
help reduce approach angles, if necessary.
Caution
The vehicle may be equipped with an
electric parking brake and/or an
12. Try to start the vehicle that had the
dead battery. If it will not start after a
few tries, it probably needs service.
electronic shifter. In the event of a loss of
12-volt battery power, the electric parking
brake cannot be released, and the vehicle
cannot be shifted to N (Neutral). Tire
skates or dollies must be used under the
non-rolling tires to prevent damage while
loading/unloading the vehicle. Dragging
the vehicle will cause damage not
If equipped, a tow eye may be located near
the spare tire or emergency jack. Do not use
the tow eye to pull the vehicle from the
snow, mud, sand, or ditch. Tow eye threads
may have right or left-hand threads. Use
caution when installing or removing the
tow eye.
Jumper Cable Removal
Reverse the sequence exactly when
removing the jumper cables.
After starting the disabled vehicle and
removing the jumper cables, allow it to idle
for several minutes.
covered by the vehicle warranty.
The vehicle must be in N (Neutral) and the
electric parking brake must be released
when loading the vehicle onto a flatbed tow
truck.
Towing the Vehicle
Transporting a Disabled Vehicle
Caution
Incorrectly transporting a disabled vehicle
may cause damage to the vehicle. Use
proper tire straps to secure the vehicle to
the flatbed tow truck. Do not strap or
hook to any frame, underbody,
Caution
The vehicle may be equipped with a tow
eye. Improper use of the tow eye may
cause damage to the vehicle and is not
covered by the vehicle warranty.
If equipped, use the tow eye to load the
vehicle onto a flatbed tow truck from a
flat road surface, or to move the vehicle
a very short distance at a walking pace.
The tow eye is not designed for off-road
recovery. The vehicle must be in
Vehicles Equipped with Electronic Shifter
The vehicle must be in N (Neutral) and the
electric parking brake must be released
when loading the vehicle onto a flatbed tow
truck.
.
If the vehicle is equipped with car wash
mode and has 12-volt battery power, refer
to “Car Wash Mode” under Automatic
Transmission (Electronic Shifter) 0 223 or
Automatic Transmission (Mechanical
Shifter) 0 220 to place the vehicle in
N (Neutral).
or suspension component not specified
below. Do not move vehicles with drive
axle tires on the ground. Damage is not
covered by the vehicle warranty.
N (Neutral) with the electric parking
brake released when using the tow eye.
Vehicle Care
403
.
If the 12-volt battery is dead and/or the
engine will not start, the vehicle will not
move. Try to jump start the vehicle. Refer
to Jump Starting - North America 0 399
and if the jump start is successful, retry
the “Car Wash Mode” procedure.
ground. Dolly towing is towing the vehicle
with two wheels on the ground and two
wheels on a dolly.
Front Attachment Points
Here are some important things to consider
before recreational vehicle towing:
.
Before towing the vehicle, become
familiar with the local laws that apply to
recreational vehicle towing. These laws
may vary by region.
Vehicles Equipped with Mechanical
Transmission Range Select Shifter
.
The vehicle must be in N (Neutral) and
the Electric Parking Brake must be
released when loading the vehicle onto a
flatbed tow truck. If the 12-volt battery is
dead and/or Electric Parking Brake is not
released, the vehicle will not move. Try to
jump start the vehicle with a known good
12-volt battery, shift the car into
.
.
.
The towing capacity of the towing
vehicle. Read the tow vehicle
manufacturer's recommendations.
How far the vehicle can be towed. Some
vehicles have restrictions on how far and
how long the vehicle can be towed.
Whether the vehicle has the proper
towing equipment. See your dealer or
trailering professional for additional
advice and equipment recommendations.
The vehicle is equipped with specific
attachment points to be used to pull the
vehicle onto a flatbed car carrier from a flat
road surface. Do not use these attachment
points to pull the vehicle from snow, mud
or sand.
N (Neutral), and release the Electric
Parking Brake. Refer to Jump Starting -
North America 0 399.
If jump starting is unsuccessful, the vehicle
will not move. Tire skates or dollies must be
used under the non-rolling tires to prevent
vehicle damage.
.
Whether the vehicle is ready to be towed.
Just as preparing the vehicle for a long
trip, make sure the vehicle is prepared to
be towed.
Recreational Vehicle Towing
Recreational vehicle towing means towing
the vehicle behind another vehicle, such as a
motor home. The two most common types
of recreational vehicle towing are dinghy
and dolly towing. Dinghy towing is towing
the vehicle with all four wheels on the
Follow the tow vehicle manufacturer’s
instructions. See your dealer or trailering
professional for additional advice and
equipment recommendations.
404
Vehicle Care
Caution
Only dinghy tow four-wheel-drive vehicles
with a two-speed transfer case that have an
N (Neutral) and a 4 n (Four-Wheel Drive
Low) setting.
Caution
Use of a shield mounted in front of the
vehicle grille could restrict airflow and
cause damage to the transmission. The
repairs would not be covered by the
vehicle warranty. If using a shield, only
use one that attaches to the towing
vehicle.
If a vehicle with two-wheel drive or a
single-speed transfer case is towed with
all four wheels on the ground, the
drivetrain components could be damaged.
The repairs would not be covered by the
vehicle warranty.
Warning
{
Shifting a four-wheel-drive vehicle's
transfer case into N (Neutral) can allow
the vehicle to move even if the
Two-wheel-drive vehicles and vehicles with a
single-speed transfer case should not be
towed with all four wheels on the ground.
transmission is in P (Park). You or others
could be injured. Set the parking brake
and use wheel blocks before shifting the
transfer case to N (Neutral).
Dinghy Towing (Two-Wheel-Drive
Vehicles and Vehicles with a
Single-Speed Transfer Case)
Dinghy Towing (Vehicles with a
Two-Speed Transfer Case)
To dinghy tow:
1. Position the vehicle being towed behind
the tow vehicle, facing forward and on a
level surface.
2. Securely attach the vehicle being towed
to the tow vehicle.
3. Apply the parking brake and start the
engine.
4. Shift the transfer case to N (Neutral). See
“Shifting into N (Neutral)” under
Four-Wheel Drive 0 230.
5. With the engine running, release the
parking brake and verify that the
transfer case is in N (Neutral) by shifting
Vehicle Care
405
the transmission to D (Drive) and then to
R (Reverse). There should be no
movement while shifting the
transmission.
10. Disconnect the negative (–) battery
cable. See “Negative Battery Cable
Disconnection” in Battery - North
America 0 352.
STOP for five seconds until the green
light comes on the button is illuminated.
See Ignition Positions 0 211.
4. Set the parking brake. See Electric
Parking Brake 0 236.
6. Shift the transmission to P (Park).
7. Release the parking brake.
8. Turn the vehicle off.
Caution
5. Disconnect from the tow vehicle.
6. Start the engine.
If the steering column is locked, vehicle
damage may occur.
9. Turn on the ignition without starting the
engine. To do this, take your foot off the
brake pedal then press and hold ENGINE
START/STOP for five seconds until the
green light on the button is illuminated.
See Ignition Positions 0 211.
7. Shift the transmission to N (Neutral).
11. Move the steering wheel to make sure
the steering column is unlocked.
8. Shift the transfer case to 2 m (Two-Wheel
Drive High). When the shift to 2 m
(Two-Wheel Drive High) is complete, the
light in the instrument cluster will stop
flashing and stay lit. See
12. For column shift transmissions, verify the
transmission is in P (Park). Failing to put
the transmission into Park before flat
towing can damage the transmission.
Four-Wheel-Drive Light 0 120.
Warning
{
13. Keep the remote key outside of the
vehicle and manually lock the doors.
Access the vehicle by using the key in
the door lock. See Door Locks 0 19.
9. Check that the vehicle is in 2 m
(Two-Wheel Drive High) by starting the
engine and shifting the transmission to
D (Drive) and then to R (Reverse). There
should be movement of the vehicle while
shifting.
To avoid death, serious injury,
or property damage, before dinghy
towing the vehicle, always disconnect and
secure the negative battery cable and
cover the negative battery post and cable
with a non-conductive material. If the
battery is left connected or the battery
cable contacts the post, the Electric
Parking Brake may activate during
towing, which could cause a crash.
Disconnecting the Towed Vehicle
Before disconnecting from the tow vehicle:
10. Shift the transmission to P (Park) and
turn off the ignition.
1. Park on a level surface. Secure the
vehicle with wheel blocks.
11. Release the parking brake and remove
the wheel blocks.
2. Re-connect the negative (–) battery. See
Battery - North America 0 352.
12. Reset any lost presets.
3. Turn on the ignition without starting the
engine. With your foot off the brake
pedal, press and hold ENGINE START/
406
Vehicle Care
The outside temperature display will
default to 0 °C (32 °F) but will reset with
normal usage.
Appearance Care
Exterior Care
Dolly Towing
Locks
Locks are lubricated at the factory. Use a
de-icing agent only when absolutely
necessary, and have the locks greased after
using. See Recommended Fluids and
Lubricants 0 421.
Washing the Vehicle
To preserve the vehicle's finish, wash it
often and out of direct sunlight.
Caution
Do not tow this vehicle with two wheels
on the ground, or vehicle damage could
occur. This damage would not be covered
by the vehicle warranty.
Warning
{
Do not power wash any part of the
vehicle’s interior, including the vinyl floor
covering. This could damage safety and
other systems in the vehicle, which
would not be covered by the vehicle
warranty.
Dolly towing this vehicle is not allowed with
either the front or the rear tires on the
ground for two-wheel drive or four-wheel
drive, regardless of transfer case.
Vehicle Care
407
Caution
Caution (Continued)
Caution (Continued)
Do not use petroleum-based, acidic,
or abrasive cleaning agents as they can
damage the vehicle's paint, metal,
or plastic parts. If damage occurs, it
would not be covered by the vehicle
warranty. Approved cleaning products can
be obtained from your dealer. Follow all
manufacturer directions regarding correct
product usage, necessary safety
This could cause damage that would not
be covered by the vehicle warranty.
not recommended, due to lack of
clearance for the undercarriage and/or
wide rear tires and wheels.
Solvents or aggressive cleaners may harm
underhood components. The usages of these
chemicals should be avoided.
Caution
Automatic car washes can cause damage
to the vehicle, wheels, ground effects,
and convertible top (if equipped).
Recommend water only.
A pressure washer may be used, but care
must be utilized. The following criteria must
be followed:
Water pressure must be kept below
14 000 KPa (2,000 PSI).
Water temperature must be below 80 °C
(180 °F).
Spray nozzle with a 40 degree wide angle
spray pattern or wider must be used.
precautions, and appropriate disposal of
any vehicle care product.
Do not use automatic car washes due to
lack of clearance for the undercarriage,
wide rear tires, and wheels.
.
.
.
.
Caution
If using an automatic car wash, follow with
the car wash instructions. The windshield
wiper and rear window wiper, if equipped,
must be turned off. Remove any accessories
that may be damaged or interfere with the
car wash equipment.
Avoid using high-pressure washes closer
than 30 cm (12 in) to the surface of the
vehicle. Use of power washers exceeding
8 274 kPa (1,200 psi) can result in
Nozzle must be kept at least 30 cm (1 ft)
away from all surfaces.
damage or removal of paint and decals.
Automatic Car Wash
See Power Assist Steps 0 28 for cleaning
information.
Cleaning Underhood Components
Caution
Caution
Rinse the vehicle well, before washing and
after, to remove all cleaning agents
completely. If they are allowed to dry on
the surface, they could stain.
Some automatic car washes can cause
damage to the vehicle, wheels and
ground effects. Automatic car washes are
(Continued)
Do not power wash any component
under the hood that has this e
symbol.
(Continued)
408
Vehicle Care
.
.
Use only approved cleaning solutions for
aluminum, chrome or stainless steel.
Some cleaners are highly acidic or contain
alkaline substances and can damage the
moldings.
Always dilute a concentrated cleaner
according to the manufacturer’s
instructions.
Do not use cleaners that are not intended
for automotive use.
Use a nonabrasive wax on the vehicle
after washing to protect and extend the
molding finish.
Dry the finish with a soft, clean chamois or
an all-cotton towel to avoid surface
scratches and water spotting.
Caution
Machine compounding or aggressive
polishing on a basecoat/clearcoat paint
finish may damage it. Use only
non-abrasive waxes and polishes that are
made for a basecoat/clearcoat paint finish
on the vehicle.
Finish Care
Application of aftermarket clearcoat sealant/
wax materials is not recommended.
If painted surfaces are damaged, see your
dealer to have the damage assessed and
repaired. Foreign materials such as calcium
chloride and other salts, ice melting agents,
road oil and tar, tree sap, bird droppings,
chemicals from industrial chimneys, etc., can
damage the vehicle's finish if they remain
on painted surfaces. Wash the vehicle as
soon as possible. If necessary, use
.
.
To keep the paint finish looking new, keep
the vehicle garaged or covered whenever
possible.
Protecting Exterior Bright Metal Moldings
Spray-In Bedliner Care
Caution
A spray-in bedliner is a permanent coating
that bonds to the truck bed and cannot be
removed. Promptly rinse the bedliner surface
following a chemical spill to avoid
permanent damage.
Failure to clean and protect the bright
metal moldings can result in a hazy
white finish or pitting. This damage
would not be covered by the vehicle
warranty.
non-abrasive cleaners that are marked safe
for painted surfaces to remove foreign
matter.
Occasional hand waxing or mild polishing
should be done to remove residue from the
paint finish. See your dealer for approved
cleaning products.
Spray-in bedliners can fade from oxidation,
road dirt, heavy-duty hauling, and hard
water stains. Clean it periodically by
washing off the loose dirt and using a mild
detergent. To restore the original
appearance, apply the bedliner conditioner
available through your dealer.
The bright metal moldings on the vehicle
are aluminum, chrome or stainless steel. To
prevent damage always follow these
cleaning instructions:
Be sure the molding is cool to the touch
before applying any cleaning solution.
Do not apply waxes or polishes to uncoated
plastic, vinyl, rubber, decals, simulated
wood, or flat paint as damage can occur.
.
Vehicle Care
409
.
.
Ice scrapers or other hard items.
Shutter System
Caution
Aftermarket appearance caps or covers
while the lamps are illuminated, due to
excessive heat generated.
Using silicone-based products may
damage the bedliner, reduce the
slip-resistant texture, and attract dirt.
Caution
Cleaning Exterior Lamps/Lenses,
Emblems, Decals and Stripes
Failure to clean lamps properly can cause
damage to the lamp cover that would
not be covered by the vehicle warranty.
Use only lukewarm or cold water, a soft
cloth, and a car washing soap to clean
exterior lamps, lenses, emblems, decals and
stripes. Follow instructions under "Washing
the Vehicle" previously in this section.
Caution
Using wax on low gloss black finish
stripes can increase the gloss level and
create a non-uniform finish. Clean low
gloss stripes with soap and water only.
Lamp covers are made of plastic, and some
have a UV protective coating. Do not clean
or wipe them while they are dry.
The vehicle may have a shutter system
designed to help improve fuel economy.
Keep the shutter system clear of debris,
snow and ice. If the check engine light is
activated, please check to see if the shutter
system is clear of debris, snow or ice.
Do not use any of the following on lamp
covers:
Air Intakes
Clear debris from the air intakes, between
the hood and windshield, when washing the
vehicle.
.
Abrasive or caustic agents.
.
Washer fluids and other cleaning agents
in higher concentrations than suggested
by the manufacturer.
Windshield and Wiper Blades
Clean the outside of the windshield with
glass cleaner.
.
Solvents, alcohols, fuels, or other harsh
cleaners.
Clean rubber blades using a lint-free cloth or
paper towel soaked with windshield washer
fluid or a mild detergent. Wash the
windshield thoroughly when cleaning the
410
Vehicle Care
blades. Bugs, road grime, sap, and a buildup
of vehicle wash/wax treatments may cause
wiper streaking.
Caution (Continued)
Caution (Continued)
tire dressing, always wipe off any
overspray from all painted surfaces on
the vehicle.
or brushes. Use only GM approved
cleaners. Do not drive the vehicle through
an automatic car wash that uses silicon
carbide tire/wheel cleaning brushes.
Damage could occur and the repairs
would not be covered by the vehicle
warranty.
Replace the wiper blades if they are worn or
damaged. Damage can be caused by
extreme dusty conditions, sand, salt, heat,
sun, snow, and ice.
Wheels and Wheel Trim
Use a soft, clean cloth with mild soap and
water to clean the wheels. After rinsing
thoroughly with clean water, dry with a
soft, clean towel. A wax may then be
applied.
Weatherstrips
Apply weatherstrip lubricant on
Brake System
weatherstrips to make them last longer, seal
better, and not stick or squeak. Lubricate
weatherstrips once a year. Hot, dry climates
may require more frequent application. Black
marks from rubber material on painted
surfaces can be removed by rubbing with a
clean cloth. See Recommended Fluids and
Lubricants 0 421.
Visually inspect brake lines and hoses for
proper hook-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear
and rotors for surface condition. Inspect
drum brake linings/shoes for wear or cracks.
Inspect all other brake parts.
Caution
Chrome wheels and chrome wheel trim
may be damaged if the vehicle is not
washed after driving on roads that have
been sprayed with magnesium chloride or
calcium chloride. These are used on roads
for conditions such as dust control.
Always wash the chrome with soap and
water after exposure.
Steering, Suspension, and Chassis
Components
Tires
Use a stiff brush with tire cleaner to clean
the tires.
Visually inspect steering, suspension, and
chassis components for damaged, loose,
or missing parts or signs of wear at least
once a year.
Caution
Using petroleum-based tire dressing
products on the vehicle may damage the
paint finish and/or tires. When applying a
(Continued)
Caution
Inspect power steering for proper
attachment, connections, binding, cracks,
chafing, etc.
To avoid surface damage on wheels and
wheel trim, do not use strong soaps,
chemicals, abrasive polishes, cleaners,
(Continued)
Vehicle Care
411
Visually check constant velocity joint boots
and axle seals for leaks.
and contaminate the fluid. Contaminated
fluid will decrease the life of the transfer
case and/or axles and should be replaced.
Interior Care
To prevent dirt particle abrasions, regularly
clean the vehicle's interior. Before using
cleaners, read and follow all safety
instructions on the label. While cleaning the
interior, open the doors and windows to get
proper ventilation. Newspapers or dark
garments can transfer color to the vehicle’s
interior.
Caution
Sheet Metal Damage
Lubrication of applicable suspension
points should not be done unless the
temperature is −12 °C (10 °F) or higher,
or damage could result.
If the vehicle is damaged and requires sheet
metal repair or replacement, make sure the
body repair shop applies anti-corrosion
material to parts repaired or replaced to
restore corrosion protection.
Body Component Lubrication
Original manufacturer replacement parts will
provide the corrosion protection while
maintaining the vehicle warranty.
Caution
Lubricate all key lock cylinders, hood hinges,
liftgate hinges, and the steel fuel door hinge
unless the components are plastic. Applying
silicone grease on weatherstrips with a clean
cloth will make them last longer, seal better,
and not stick or squeak.
Immediately remove cleaners, hand
lotions, sunscreen, and insect repellent
from all interior surfaces or permanent
damage may result.
Finish Damage
Quickly repair minor chips and scratches
with touch-up materials available from your
dealer to avoid corrosion. Larger areas of
finish damage can be corrected in your
dealer's body and paint shop.
Underbody Maintenance
Caution
At least twice a year, spring and fall, use
plain water to flush any corrosive materials
from the underbody. Take care to
thoroughly clean any areas where mud and
other debris can collect. If equipped with
power assist steps, extend them and then
use a high pressure wash to clean all joints
and gaps.
Use cleaners specifically designed for the
surfaces being cleaned to prevent
permanent damage to the vehicle. Apply
all cleaners directly to a cleaning cloth.
Do not spray cleaners on any switches or
controls.
Chemical Paint Spotting
Airborne pollutants can fall upon and attack
painted vehicle surfaces causing blotchy,
ring-shaped discolorations, and small,
irregular dark spots etched into the paint
surface. Refer to “Finish Care” previously in
this section.
When using liquid soap cleaners, follow the
directions on the specific cleaner or soap
solution for dilution instructions.
Do not directly power wash the transfer
case and/or front/rear axle output seals.
High pressure water can overcome the seals
412
Vehicle Care
Caution
Coated Moldings
Caution (Continued)
Coated moldings should be cleaned.
.
Do not use scented or gel-type hand
sanitizers. If hand sanitizer comes in
contact with interior surfaces of the
vehicle, blot immediately and clean
with a soft cloth dampened with a
mild soap and water solution.
To prevent damage:
.
When lightly soiled, wipe with a sponge
.
Never use a razor or any other sharp
object to remove soil from any interior
surface
or soft, lint-free cloth dampened with
water.
.
When heavily soiled, use warm soapy
water.
.
.
Never use a brush with stiff bristles.
Never rub any surface aggressively or
with too much pressure.
Vinyl/Rubber
Interior Glass
If equipped with vinyl floor and rubber floor
mats, use a soft cloth and/or brush
dampened with water to remove dust and
loose dirt. For more thorough cleaning, use
a mild soap and water solution.
.
.
To clean, use a microfiber cloth fabric
dampened with water. Wipe droplets left
behind with a clean dry cloth. If necessary,
use a commercial glass cleaner after
cleaning with plain water.
Do not get any exposed electrical
components wet.
Do not use laundry detergents or
dishwashing soaps with degreasers. Do
not use solutions that contain strong
or caustic soap.
Caution
Warning
{
.
.
.
Do not heavily saturate the upholstery
when cleaning.
To prevent scratching, never use abrasive
cleaners on automotive glass. Abrasive
cleaners or aggressive cleaning may
damage the rear window defogger.
Do not use cleaners that contain silicone,
wax-based products, or cleaners that
increase gloss on vinyl/rubber floor and
mats. These cleaners can permanently
change the appearance and feel of the
vinyl/rubber and can make the floor
slippery. Your foot could slip while
operating the vehicle, and you could lose
control, resulting in a crash. You or
others could be injured.
Do not use solvents or cleaners
containing solvents.
Do not use disinfecting wipes that are
scented or contain bleach. Do not use
wipes or cleaners that show a color
transfer to the wipe or change the
appearance of the interior surface
when used.
Cleaning the windshield with water during
the first three to six months of ownership
will reduce tendency to fog.
Speaker Covers
Vacuum around a speaker cover gently, so
that the speaker will not be damaged. Clean
spots with water and mild soap.
(Continued)
Vehicle Care
Caution
Do not attach a device with a suction cup
to the display. This may cause damage
and would not be covered by the vehicle
warranty.
413
5. If the soil is not completely removed,
use a mild soap solution followed only
by plain water.
Fabric/Carpet/Suede
Start by vacuuming the surface using a soft
brush attachment. If a rotating vacuum
brush attachment is being used, only use it
on the floor carpet. Before cleaning, gently
remove as much of the soil as possible:
If the soil is not completely removed, it may
be necessary to use a commercial upholstery
cleaner or spot lifter. Test a small hidden
area for colorfastness before using a
commercial upholstery cleaner or spot lifter.
If ring formation occurs, clean the entire
fabric or carpet.
.
Gently blot liquids with a paper towel.
Continue blotting until no more soil can
be removed.
Instrument Panel, Leather, Vinyl, Other
Plastic Surfaces, Low Gloss Paint
Surfaces, and Natural Open Pore Wood
Surfaces
.
For solid soils, remove as much as
possible prior to vacuuming.
After cleaning, use a paper towel to blot
excess moisture.
Use a soft bristle brush to remove dust from
knobs and crevices on the instrument
cluster. Use a soft microfiber cloth
dampened with water to remove dust and
loose dirt. For a more thorough cleaning,
use a soft microfiber cloth dampened with a
mild soap and water solution.
To clean:
Cleaning High Gloss Surfaces and Vehicle
Information and Radio Displays
1. Saturate a clean, lint-free colorfast cloth
with water. Microfiber cloth is
recommended to prevent lint transfer to
the fabric or carpet.
Use a microfiber cloth on high gloss surfaces
or vehicle displays. First, use a soft bristle
brush to remove dirt that can scratch the
surface. Then gently clean by rubbing with a
microfiber cloth. Never use window cleaners
or solvents. Periodically hand wash the
microfiber cloth separately, using mild soap.
Do not use bleach or fabric softener. Rinse
thoroughly and air dry before next use.
2. Remove excess moisture by gently
wringing until water does not drip from
the cleaning cloth.
Caution
Soaking or saturating leather, especially
perforated leather, as well as other
interior surfaces, may cause permanent
damage. Wipe excess moisture from
these surfaces after cleaning and allow
them to dry naturally. Never use heat,
steam, or spot removers. Do not use
liquids that contain alcohol or solvents on
(Continued)
3. Start on the outside edge of the soil and
gently rub toward the center. Fold the
cleaning cloth to a clean area frequently
to prevent forcing the soil into the
fabric.
4. Continue gently rubbing the soiled area
until there is no longer any color
transfer from the soil to the cleaning
cloth.
414
Vehicle Care
recommended that GM-certified floor
mats are purchased. Non-GM floor mats
may not fit properly and may interfere
with the pedals. Always check that the
floor mats do not interfere with the
pedals.
Do not use a floor mat/liner if the vehicle
is not equipped with a floor mat retainer
on the driver side floor.
Use the floor mat/liner insert with the
correct side up. Do not turn it over.
Do not place anything on top of the
driver side floor mat/liner.
Caution (Continued)
Warning
{
leather seats. Do not use cleaners that
contain silicone or wax-based products.
Cleaners containing these solvents can
permanently change the appearance and
feel of leather or soft trim, and are not
recommended.
Do not bleach or dye seat belt webbing.
It may severely weaken the webbing. In
a crash, they might not be able to
provide adequate protection. Clean and
rinse seat belt webbing only with mild
soap and lukewarm water. Allow the
webbing to dry.
.
Do not use cleaners that increase gloss,
especially on the instrument panel. Reflected
glare can decrease visibility through the
windshield under certain conditions.
.
.
.
.
Floor Mats
Warning
{
Use only a single floor mat/liner on the
driver side.
Do not place one floor mat/liner on top
of another.
Caution
Use of air fresheners may cause
If a floor mat, a liner, or a liner insert is
the wrong size or is not properly
permanent damage to plastics and
painted surfaces. If an air freshener
comes in contact with any plastic or
painted surface in the vehicle, blot
immediately and clean with a soft cloth
dampened with a mild soap solution.
Damage caused by air fresheners would
not be covered by the vehicle warranty.
installed, it can interfere with the pedals.
Interference with the pedals can cause
unintended acceleration and/or increased
stopping distance, which can cause a
crash and injury. Make sure the floor
mat, liner, or liner insert does not
interfere with the pedals.
Removing and Replacing the Floor Mats/
Liners
Pull up on the rear of the driver side floor
mat/liner to unlock each retainer and
remove.
Use the following guidelines for proper floor
mat/liner use:
Care of Seat Belts
.
The original equipment floor mats are
designed for your vehicle. If the floor
mats need to be replaced, it is
Keep belts clean and dry.
Vehicle Care
415
Reinstall by lining up the floor mat/liner
retainer openings over the carpet retainers
and snapping into position.
Reinstall by lining up the floor liner insert
button clips over the liner retainers and
snapping into position.
Make sure the floor mat/liner is properly
secured in place.
Make sure the floor liner insert is properly
secure in place using all button clips.
Verify the floor mat/liner does not interfere
with the pedals.
Verify the floor liner insert does not
interfere with the pedals.
Removing and Replacing the Floor Liner
Inserts
Cleaning Rubber Floor Mats (All-Weather
Mats and Floor Liners)
Pull up on the edge of the driver side floor
liner insert to unlock each button clip and
remove.
See “Vinyl/Rubber” under Interior Care 0 411
for important cleaning information.
