If you will be driving your vehicle at speeds of 100 mph
(160 km/h) or higher, where it is legal, set the cold
inflation pressure to the maximum inflation pressure
shown on the tire sidewall, or 35 psi (244 kPa),
whichever is lower. See the example following. When
you end this high-speed driving, return the tires to
the cold inflation pressure shown on the Tire and
Loading Information label. SeeLoading Your Vehicle on
page 4-29.
Example:
You will find the maximum load and inflation pressure
molded on the tire’s sidewall, in small letters, near
the rim flange. It will read something like this: Maximum
load 690 kg (1521 lbs) 300 kPa (44 psi) Max. Press.
For this example, you would set the inflation pressure for
high-speed driving at 35 psi (244 kPa) for the front
and rear tires.
Racing or other competitive driving may affect the
warranty coverage of your vehicle. See your warranty
booklet for more information.Tire Inspection and Rotation
The tires on your vehicle are different sizes front to rear.
Due to this, your tires should not be rotated. Each tire
and wheel should be used only in the position it is in.
Check your tires and wheels regularly for unusual wear
and damage. Also see,Scheduled Maintenance on
page 6-4,When It Is Time for New Tires on page 5-59
andWheel Replacement on page 5-64.
When It Is Time for New Tires
One way to tell when it is
time for new tires is to
check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remaining. Some
commercial truck tires
may not have
treadwear indicators.
5-59
You need a new tire if any of the following statements
are true:
•You can see the indicators at three or more places
around the tire.
•You can see 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.
•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.
Buying New Tires
GM has developed and matched specific tires for your
vehicle. The original equipment tires installed on
your vehicle, when it was new, were designed to meet
General Motors Tire Performance Criteria Specification
(TPC spec) system rating. If you need replacement
tires, GM strongly recommends that you get tires with
the same TPC Spec rating. This way, your vehicle
will continue to have tires that are designed to give the
same performance and vehicle safety, during normal
use, as the original tires.
GM’s exclusive TPC Spec system considers over a
dozen critical specifications that impact the overall
performance of your 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 by the
tire manufacturer. If the tires have an all-season tread
design, the TPC spec number will be followed by an MS
for mud and snow. SeeTire Sidewall Labeling on
page 5-52for additional information.
5-60
Winter tires with the same speed rating as your original
equipment tires may not be available for H, V, W, Y,
and ZR speed rated tires. If you choose snow tires with
a lower speed rating, never exceed the tire’s maximum
speed capability.
{CAUTION:
Mixing tires could cause you to lose control
while driving. If you mix tires of different sizes
(other than those originally installed on your
vehicle), brands, or types (radial and
bias-belted tires), the vehicle may not handle
properly, and you could have a crash. Using
tires of different sizes (other than those
originally installed on your vehicle), brands or
types, may also cause damage to your vehicle.
Be sure to use the correct size, brand, and
type tires on all four wheels.
{CAUTION:
If you use bias-ply tires on your vehicle, the
wheel rim anges could develop cracks after
many miles of driving. A tire and/or wheel
could fail suddenly, causing a crash. Use only
radial-ply tires with the wheels on your vehicle.
If you must replace your vehicle’s tires with those that
do not have a TPC Spec number, make sure they
are the same size, load range, speed rating, and
construction type (radial and bias-belted tires) as your
vehicle’s original tires.
Your vehicle’s original equipment tires are listed on the
Tire and Loading Information Label. This label is
attached to the vehicle’s B-pillar. SeeLoading Your
Vehicle on page 4-29for more information about the Tire
and Loading Information Label and its location on
your vehicle.
5-61
Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this may
affect the way your vehicle performs, including its
braking, ride and handling characteristics, stability and
resistance to rollover. Additionally, if your vehicle
has electronic systems such as, anti-lock brakes,
traction control, and electronic stability control, the
performance of these systems can be affected.
{CAUTION:
If you add different sized wheels, your vehicle
may not provide an acceptable level of
performance and safety if tires not
recommended for those wheels are selected.
You may increase the chance that you will
crash and suffer serious injury. Only use GM
speci c wheel and tire systems developed for
your vehicle, and have them properly installed
by a GM certi ed technician.
SeeBuying New Tires on page 5-60andAccessories
and Modi cations on page 5-3for additional information.
Uniform Tire Quality Grading
Quality grades can be found where applicable on the
tire sidewall between tread shoulder and maximum
section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, 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
system does not apply to deep tread, winter-type
snow tires, space-saver or temporary use spare tires,
tires with nominal rim diameters of 10 to 12 inches
(25 to 30 cm), or to some limited-production tires.
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.
5-62
Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You cannot know how it has been
used or how far it has been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new GM original
equipment wheel.
Tire Chains
{CAUTION:
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 you to lose control of your
vehicle and you or others may be injured in a
crash. Use another type of traction device only
if its manufacturer recommends it for use on
your vehicle and tire size combination and road
conditions. Follow that manufacturer’s
instructions. To help avoid damage to your
vehicle, drive slowly, re-adjust or remove the
device if it is contacting your vehicle, and do
not spin your wheels. If you do nd traction
devices that will t, install them on the
rear tires.
5-66
Tires.............................................................5-51
Aluminum or Chrome-Plated Wheels,
Cleaning.................................................5-82
Buying New Tires........................................5-60
Chains.......................................................5-66
Cleaning....................................................5-82
Different Size..............................................5-62
If a Tire Goes Flat.......................................5-67
Inflation - Tire Pressure................................5-57
Inspection and Rotation................................5-59
Tire Inflator Kit............................................5-68
Tire Sidewall Labeling..................................5-52
Tire Terminology and Definitions....................5-54
Uniform Tire Quality Grading.........................5-62
Wheel Alignment and Tire Balance.................5-63
Wheel Replacement.....................................5-64
When It Is Time for New Tires......................5-59
Towing
Recreational Vehicle.....................................4-35
Towing a Trailer..........................................4-35
Your Vehicle...............................................4-35
Traction
Control System (TCS).................................... 4-9
Control System Warning Light.......................3-32
Trailer
Recommendations.......................................4-47
Transmission
Fluid, Automatic...........................................5-20
Fluid, Manual..............................................5-22Transmission Operation, Automatic....................2-19
Transmission Operation, Manual........................2-21
Trip Odometer................................................3-26
Truck-Camper Loading Information....................4-34
Turn and Lane-Change Signals.......................... 3-7
Turn Signal/Multifunction Lever........................... 3-7
U
Understanding Radio Reception........................3-85
Uniform Tire Quality Grading............................5-62
Universal Home Remote System.......................2-30
Operation...................................................2-30
V
Vehicle
Control........................................................ 4-6
Damage Warnings........................................... iv
Loading......................................................4-29
Parking Your...............................................2-25
Symbols......................................................... iv
Vehicle Data Collection and Event
Data Recorders............................................. 7-9
Vehicle Identification
Number (VIN).............................................5-85
Service Parts Identification Label...................5-85
11
Vehicle Personalization....................................2-53
DIC ...........................................................3-52
Memory Seat..............................................2-53
Ventilation Adjustment......................................3-23
Visors...........................................................2-13
W
Warning Lights, Gages and Indicators................3-24
Warnings
DIC Warnings and Messages........................3-45
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-6
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Wheels
Alignment and Tire Balance..........................5-63
Different Size..............................................5-62
Replacement...............................................5-64Windows.......................................................2-11
Power........................................................2-12
Windshield
Washer........................................................ 3-9
Washer Fluid..............................................5-31
Wiper Blade Replacement.............................5-49
Wiper Blades, Cleaning................................5-81
Wiper Fuses...............................................5-86
Wipers......................................................... 3-9
Winter Driving................................................4-24
Y
Your Vehicle and the Environment....................... 6-2
12