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.
SeeTire Pressure Monitor Operation on page 6-67for
additional information.
Federal Communications
Commission (FCC) and Industry
and Science Canada
SeeRadio Frequency Statement on page 8-18
for information regarding Part 15 of the Federal
Communications Commission (FCC) Rules and
RSS-210/211 of Industry and Science Canada.
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
on your vehicle, excluding the spare tire. The TPMS
sensors monitor the air pressure in your vehicle’s tires
and transmit the tire pressure readings to a receiver
located in the vehicle.
When a low tire pressure
condition is detected, the
TPMS illuminates the low
tire pressure warning light
located on the instrument
panel cluster.
At the same time, a Driver Information Center (DIC)
message is displayed on the DIC display screen.
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. For additional
information and details about the DIC operation and
displays seeDIC Operation and Displays on page 4-33
andDIC Warnings and Messages on page 4-37.
6-67
The low tire pressure warning light may come on in
cool weather when the vehicle is first started, and then
turn off as you start to drive. This could be an early
indicator that the air pressure in the tire(s) are getting
low and need to be inflated to the proper pressure.
A Tire and Loading Information label, attached to
your vehicle, shows the size of your vehicle’s original
equipment tires and the correct inflation pressure for
your vehicle’s tires when they are cold. SeeLoading the
Vehicle on page 5-33, for an example of the Tire and
Loading Information label and its location on your vehicle.
Also seeIn ation - Tire Pressure on page 6-64.
Your vehicle’s TPMS can warn you about a low tire
pressure condition but it does not replace normal
tire maintenance. SeeTire Inspection and Rotation
on page 6-71andTires on page 6-57.
Notice:Liquid tire sealants could damage the Tire
Pressure Monitor System (TPMS) sensors. Sensor
damage caused by using a tire sealant is not covered
by your warranty. Do not use liquid tire sealants.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 warning light
flashes for about one minute and then stays on for the
remainder of the ignition cycle. A DIC warning message
is also displayed. The low tire warning light and DIC
warning message come on at each ignition cycle until
the problem is corrected. Some of the conditions that
can cause the malfunction light and DIC message 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 TPMS malfunction light and DIC
message should go off once you re-install the
road tire containing the TPMS sensor.
•The TPMS sensor matching process was started but
not completed or not completed successfully after
rotating the vehicle’s tires. The DIC message and
TPMS malfunction light should go off once the TPMS
sensor matching process is performed successfully.
See “TPMS Sensor Matching Process” later in this
section.
6-68
•One or more TPMS sensors are missing or
damaged. The DIC message and the TPMS
malfunction light should go off when the TPMS
sensors are installed and the sensor matching
process is performed successfully. See your
dealer/retailer for service.
•Replacement tires or wheels do not match your
vehicle’s original equipment tires or wheels. Tires
and wheels other than those recommended for your
vehicle could prevent the TPMS from functioning
properly. SeeBuying New Tires on page 6-73.
•Operating electronic devices or being near facilities
using radio wave frequencies similar to the TPMS
could cause the TPMS sensors to malfunction.
If the TPMS is not functioning it cannot detect or
signal a low tire condition. See your dealer/retailer for
service if the TPMS malfunction light and DIC message
comes on and stays on.
TPMS Sensor Matching Process
Each TPMS sensor has a unique identification code.
Any time you replace one or more of the TPMS sensors
or rotate your vehicle’s tires, the identification codes need
to be matched to the new tire/wheel position. The sensors
are matched to the tire/wheel positions in the following
order: driver side front tire, passenger side front tire,
passenger side rear tire, and driver side rear tire using
a TPMS diagnostic tool. See your dealer/retailer for
service.
The TPMS sensors can also be matched to each
tire/wheel position by increasing or decreasing the tire’s
air pressure. If increasing the tire’s air pressure, do
not exceed the maximum inflation pressure indicated on
the tire’s sidewall. To let air-pressure out of a tire you
can use the pointed end of the valve cap, a pencil-style
air pressure gage, or a key.
You have one minute to match the first tire/wheel
position, and five minutes overall, to match all four
tire/wheel positions. If it takes longer than one minute,
to match the first tire and wheel, or more than five
minutes to match all four tire and wheel positions, the
matching process stops and you need to start over.
6-69
The TPMS sensor matching procedure is outlined
below:
1. Set the parking brake.
2. Turn the ignition switch to ON/RUN with the
engine off.
3. Turn the exterior lamp switch from AUTO to OFF
four times within three seconds. A double horn chirp
will sound and the TPMS low tire warning light starts
flashing. The double horn chirp and flashing TPMS
warning light indicates the TPMS matching process
has started. The TPMS warning light should continue
flashing throughout the matching procedure.
The LOW TIRE message displays on the Driver
Information Center (DIC).
4. Start with the driver side front tire.
5. Remove the valve cap from the valve cap stem.
Activate the TPMS sensor by increasing or
decreasing the tire’s air pressure for 10 seconds,
then stop and listen for a single horn chirp. The
single horn chirp should sound within 15 seconds,
confirming that the sensor identification code has
been matched to this tire and wheel position. If you
do not hear the confirming single horn chirp, turn the
ignition switch to LOCK and start over beginning with
Step 2.6. Proceed to the passenger side front tire, and repeat
the procedure in Step 5.
7. Proceed to the passenger side rear tire, and repeat
the procedure in Step 5.
8. Proceed to the driver side rear tire, and repeat the
procedure in Step 5.
9. After hearing the confirming horn chirp for the driver
side rear tire, check to see if the TPMS low tire
warning light and the DIC LOW TIRE messages
have turned off. If yes, the TPMS sensors have been
relearned. Turn the ignition switch to LOCK/OFF.
If the low tire warning light and the SERV TPM
message on the DIC are on after completing Step 5
for the driver side rear tire, the sensor relearn
process has not been successful. Turn the ignition
switch to LOCK/OFF and repeat the matching
process beginning with Step 2.
10. Set all four tires to the recommended air pressure
level as indicated on the Tire and Loading
Information label.
11. Put the valve caps back on the valve stems.
6-70
Wheel Alignment and Tire Balance
The tires and wheels on your vehicle were aligned and
balanced carefully at the factory to give you the longest
tire life and best overall performance. Adjustments to
wheel alignment and tire balancing will not be necessary
on a regular basis. However, if you notice unusual tire
wear or your vehicle pulling to one side or the other,
the alignment might need to be checked. If you notice
your vehicle vibrating when driving on a smooth road,
the tires and wheels might need to be rebalanced.
See your dealer/retailer for proper diagnosis.
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 (except some aluminum
wheels, which can sometimes be repaired). See your
dealer/retailer if any of these conditions exist.
Your dealer/retailer will know the kind of wheel
you need.
Each new wheel should have the same load-carrying
capacity, diameter, width, offset, and be mounted
the same way as the one it replaces.If you need to replace any of your wheels, wheel bolts,
wheel nuts, or Tire Pressure Monitor System (TPMS)
sensors, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts, wheel nuts, and TPMS sensors
for your vehicle.
{WARNING:
Using the wrong replacement wheels, wheel bolts,
or wheel nuts on your vehicle can be dangerous.
It could affect the braking and handling of your
vehicle, make your tires lose air and make you
lose control. You could have a collision in which
you or others could be injured. Always use the
correct wheel, wheel bolts, and wheel nuts for
replacement.
Notice:The wrong wheel can also cause 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.
SeeChanging a Flat Tire on page 6-80for more
information.
6-77
The trailer brake relay is located on the bottom side of
the battery harness.
Fuses Usage
O2 SNSROxygen Sensors, Air Injection
Reactor (AIR) Relay
A/CAir Conditioning Control Head,
Power Seats
A/C CMPRSR Air Conditioning Compressor
ABSAntilock Brake System (ABS),
ABS Module, Four-Wheel Drive,
Gravity Sensor
Fuses Usage
ABS 1 ABS 1 (ABS Logic)
ABS 2 ABS 2 (ABS Pump)
AUX PWR 1 Accessory Power 1
AUX PWR 2 Accessory Power 2
BCK/UP Back-up Lights
BLWR Climate Control Fan
CLSTR Cluster
CNSTR VENT Fuel Canister Vent Solenoid
CRUISECruise Control Switch,
Inside Rearview Mirror,
Transfer Case Control Module,
Brake Switch, Clutch Disable
DR/LCK Power Door Locks (If Equipped)
DRL Daylight Running Lamps
ERLSMass Air Flow (MAF) Sensor,
Can Purge Solenoid, Air Injector
Reactor (AIR) Relay
ETC Electronic Throttle Control (ETC)
FOG/LAMP Fog Lamps (If Equipped)
6-114
Fuses Usage
VSES/STOPVehicle Stability Enhancement
System/STOP
WPR Wiper
WSW Wiper/Washer Switch
Relays Usage
A/C CMPRSR Air Conditioning Compressor
BEAM SEL Beam Selection
DRL Daylight Running Lamps
FOG/LAMP Fog Lamps (If Equipped)
BK UP LP Back Up Lamp
HDLP Headlamps
HORN Horn
IGN 3 HVACIgnition 3, Climate Control,
Climate Control Head Fuse,
Power Seat Fuse
PRK/LAMPFront Parking Lamp Fuse,
Rear Parking Lamps
PWR/TRNPowertrain, Electronic Throttle
Control Fuse, Oxygen Sensor Fuse
Relays Usage
RAPRetained Accessory Power
(Power Window Fuse,
Wiper/Washer Switch Fuse),
Sunroof Fuse
RUN/CRNKRun/Crank, Airbag System Fuse,
Cruise Control Fuse, Ignition Fuse,
Back-Up Lamps, ABS Fuse, Front
Axle, PCM-1, Injectors Fuse,
Transmission Fuse, ERLS
STRTR Starter Relay (PCM Relay)
VSESVehicle Stability Enhancement
System
WPR Wipers (On/Off)
WPR 2 Wiper 2 (High/Low)
Miscellaneous Usage
A/C CLTCH Diode — Air Conditioning, Clutch
MEGA FUSE Mega Fuse
WPR Diode — Wiper
6-116
Tires (cont.)
Changing a Flat Tire....................................6-80
Cleaning...................................................6-108
Different Size..............................................6-75
High-Speed Operation..................................6-65
If a Tire Goes Flat.......................................6-79
Inflation - Tire Pressure................................6-64
Inspection and Rotation................................6-71
Installing the Spare Tire................................6-85
Pressure Light.............................................4-28
Pressure Monitor Operation...........................6-67
Pressure Monitor System..............................6-66
Removing the Flat Tire.................................6-85
Removing the Spare Tire and Tools...............6-81
Secondary Latch System..............................6-93
Sidewall Labeling.........................................6-58
Spare Tire................................................6-101
Storing a Flat or Spare Tire and Tools............6-96
Terminology and Definitions...........................6-61
Uniform Tire Quality Grading.........................6-75
Wheel Alignment and Tire Balance.................6-77
Wheel Replacement.....................................6-77
When It Is Time for New Tires......................6-72
To Use the Engine Coolant Heater....................3-20
Torque Lock (Automatic Transmission)...............3-32
Total Weight on the Vehicle’s Tires....................5-54Towing
Recreational Vehicle.....................................5-41
Towing a Trailer..........................................5-48
Trailer Recommendations..............................5-60
Your Vehicle...............................................5-41
TPMS Malfunction Light and Message...............6-68
TPMS Sensor Matching Process.......................6-69
TRAC (Traction) OFF......................................4-41
Traction
Control System (TCS).................................... 5-8
Limited-Slip Rear Axle.................................... 5-9
StabiliTrak®System....................................... 5-6
TRACTION FAULT ..........................................4-41
Traction – AA, A, B, C.....................................6-76
Trailer
Towing Recommendations.............................5-60
Trailer Brakes.................................................5-55
Trailer Wiring Harness.....................................5-60
Transfer Case................................................6-48
Transmission
Fluid, Automatic...........................................6-21
Fluid, Manual..............................................6-25
Transmission Operation, Automatic....................3-21
Transmission Operation, Manual........................3-23
Transportation Options.....................................8-10
Transportation Program, Courtesy......................8-10
16