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 center pillar
(B-pillar). SeeLoading Your Vehicle on page 378,
for more information about the Tire and Loading
Information Label and its location on your vehicle.
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 461and
Accessories and Modi cations on page 400for
additional information.
463
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 (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-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.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a speci ed
government test course. For example, a tire
graded 150 would wear one and a half (1.5) 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 signi cantly from
the norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction – AA, A, B, C
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 speci ed
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.
464
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.
CAUTION: (Continued)
CAUTION: (Continued)
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,
readjust or remove the device if it is
contacting your vehicle, and do not spin
your vehicle’s wheels. If you do nd
traction devices that will t, install them
on the front tires.
467
Light (cont.)
Brake System Warning............................. 214
Charging System..................................... 213
Cruise Control.......................................... 221
Highbeam On.......................................... 221
Low Fuel Warning.................................... 222
Malfunction Indicator................................ 217
Oil Pressure............................................. 220
Passenger Airbag Status Indicator............ 211
Passenger Safety Belt Reminder.............. 210
Safety Belt Reminder............................... 209
Security................................................... 221
TCS Warning Light.................................. 216
Traction Control System (TCS) Warning..... 216
Lighting
Delayed................................................... 185
Entry........................................................ 184
Exit.......................................................... 185
Loading Your Vehicle................................... 378
Lockout Protection....................................... 109
Locks
Automatic Door Lock................................ 109
Delayed Locking...................................... 108
Door........................................................ 106
Lockout Protection................................... 109Locks (cont.)
Power Door............................................. 107
Programmable Automatic Door Unlock..... 109
Loss of Control........................................... 362
Low Fuel Warning Light............................... 222
Luggage Carrier.......................................... 162
M
Maintenance Schedule
Additional Required Services.................... 512
At Each Fuel Fill...................................... 515
At Least Once a Month............................ 515
At Least Once a Year .............................. 516
Introduction.............................................. 506
Maintenance Footnotes............................ 513
Maintenance Record................................ 522
Maintenance Requirements...................... 506
Normal Maintenance Replacement Parts.... 520
Owner Checks and Services.................... 514
Recommended Fluids and Lubricants....... 518
Scheduled Maintenance........................... 509
Using....................................................... 507
Your Vehicle and the Environment............ 506
Malfunction Indicator Light........................... 217
555
Tires (cont.)
Inspection and Rotation............................ 459
Installing the Spare Tire........................... 474
Removing the Flat Tire............................. 474
Removing the Spare Tire and Tools......... 472
Secondary Latch System......................... 481
Storing a Flat or Spare Tire and Tools..... 483
Tire Sidewall Labeling.............................. 450
Tire Terminology and De nitions............... 453
Uniform Tire Quality Grading.................... 464
Wheel Alignment and Tire Balance........... 465
Wheel Replacement................................. 465
When It Is Time for New Tires................. 461
Towing
Recreational Vehicle................................. 384
Towing a Trailer....................................... 386
Your Vehicle............................................. 384
Traction
Control System (TCS).............................. 353
Control System Warning Light.................. 216
StabiliTrak
®System................................. 355
Transaxle
Fluid, Automatic....................................... 417
Transaxle Operation, Automatic................... 133
Trip Odometer............................................. 209
Turn and Lane-Change Signals................... 173
Turn Signal/Multifunction Lever.................... 173
U
Ultrasonic Rear Parking Assist (URPA)........ 188
Understanding Radio Reception................... 342
Uniform Tire Quality Grading....................... 464
Universal Home Remote System........147, 148
Operation........................................149, 154
V
Vehicle
Control..................................................... 350
Damage Warnings....................................... 5
Loading.................................................... 378
Symbols...................................................... 5
Vehicle Data Collection and
Event Data Recorders .............................. 537
Vehicle Identi cation
Number (VIN).......................................... 496
Service Parts Identi cation Label.............. 496
Vehicle Personalization
DIC .......................................................... 249
Ventilation Adjustment.................................. 200
Visors.......................................................... 123
561