10-62 Vehicle Care
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 25 to 30 cm
(10 to 12 inches), 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 specified 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 significantly from the
norm due to variations in driving
habits, service practices,
and differences in road
characteristics and climate.
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Vehicle Care 10-63
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
specified government test
surfaces of asphalt and
concrete. A tire marked C may
have poor traction performance.
Temperature –A, B, C
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
degenerate and reduce tire life, and excessive temperature can
lead to sudden tire failure.
The grade C corresponds to a
level of performance which all
passenger car tires must meet
under the Federal Motor Vehicle
Safety Standard No. 109.
Grades B and A represent
higher levels of performance on
the laboratory test wheel than
the minimum required by law.
It should be noted that 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
combination, can cause heat
buildup and possible tire failure.Wheel Alignment and
Tire Balance
The tires and wheels on the vehicle
were aligned and balanced carefully
at the factory to give 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 there
is unusual tire wear or the vehicle
pulls to one side or the other, the
alignment should be checked. If the
vehicle vibrates when driving on a
smooth road, the tires and wheels
might need to be rebalanced.
See your dealer/retailer for proper
diagnosis.
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Vehicle Care 10-65
WARNING (Continued)
suspension or other vehicle parts.
The area damaged by the tire
chains could cause you to lose
control of the 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 the
vehicle and tire size combination
and road conditions. Follow that
manufacturer's instructions.
To help avoid damage to the
vehicle, drive slowly, readjust or
remove the device if it is
contacting the vehicle, and do not
spin the vehicle's wheels. If you
do find traction devices that will
fit, install them on the front tires.
If a Tire Goes Flat
It is unusual for a tire to blowout
while you are driving, especially if
you maintain your vehicle's tires
properly. If air goes out of a tire, it is
much more likely to leak out slowly.
But if you should ever have a
blowout, here are a few tips about
what to expect and what to do:
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 out of the
traffic lane.
A rear blowout, particularly on a
curve, acts much like a skid and
may require the same correction
you would use in a skid. In any rear
blowout remove your foot from theaccelerator pedal. Get the vehicle
under control by steering the way
you want the vehicle to go. It may
be very bumpy and noisy, but you
can still steer. Gently brake to a
stop, well off the road if possible.
{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.
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i-6 INDEX
I
Ignition Positions . . . . . . . . . . . . . . 9-28
Ignition Transmission LockCheck . . . . . . . . . . . . . . . . . . . . . . . 10-28
Illumination Control . . . . . . . . . . . . . 6-5
Immobilizer . . . . . . . . . . . . . . . . . . . . 2-10
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . 3-44
Instrument Cluster . . . . . . . . . . . . . 5-10
Instrument Panel . . . . . . . . . . . . . . . 6-5 Storage Area . . . . . . . . . . . . . . . . . . 4-1
Introduction . . . . . . . . . . . . . . . . . . .iii, 7-1
J
Jump Starting . . . . . . . . . . . . . . . . . 10-74
K
Key and Lock Messages . . . . . . . 5-35
Keyless Entry Remote (RKE) System . . . . . . . . 2-3
Keyless Entry System . . . . . . . . . . 2-2
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
L
Labeling, Tire Sidewall . . . . . . . . 10-44
Lamps Daytime Running (DRL) . . . . . . . 6-2
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Exterior Controls . . . . . . . . . . . . . . . 6-1
Front Turn Signal andParking Lamps . . . . . . . . . . . . 10-34
License Plate . . . . . . . . . . . . . . . 10-36
Malfunction Indicator . . . . . . . . . 5-15
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-5
Lap-Shoulder Belt . . . . . . . . . . . . . 3-19
LATCH System Replacing Parts After aCrash . . . . . . . . . . . . . . . . . . . . . . . 3-55
Latch, Lower Anchors and
Tethers for Children . . . . . . . . . . 3-50
Liftgate Carbon Monoxide . . . . . . . . . . . . . . 2-8
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Lights Airbag Readiness . . . . . . . . . . . . . 5-13
All-Wheel Drive . . . . . . . . . . . . . . . 5-19
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 5-19 Lights (cont.)
Change Engine Oil . . . . . . . . . . . 5-22
Charging System . . . . . . . . . . . . . 5-15
Cruise Control . . . . . . . . . . . . . . . . 5-25
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-25
Engine Coolant
Temperature Warning . . . . . . . 5-21
Engine Oil Pressure . . . . . . . . . . 5-22
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2
Fog Lamps . . . . . . . . . . . . . . . . . . . 5-24
Gate Ajar . . . . . . . . . . . . . . . . . . . . . 5-25
High-Beam On . . . . . . . . . . . . . . . . 5-24
High/Low Beam Changer . . . . . . 6-2
Low Fuel Warning . . . . . . . . . . . . 5-23
Low Washer Fluid Warning . . . 5-24
Reduced Engine Power . . . . . . 5-23
Safety Belt Reminders . . . . . . . . 5-12
Security . . . . . . . . . . . . . . . . . . . . . . 5-23
Service Vehicle Soon . . . . . . . . . 5-18
StabiliTrak
®Indicator . . . . . . . . . 5-20
Tire Pressure . . . . . . . . . . . . . . . . . 5-21
Traction Control System (TCS) Warning . . . . . . . . . . . . . . 5-20
Warning, Power Steering . . . . . 5-20
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INDEX i-11
Tires (cont.)Messages . . . . . . . . . . . . . . . . . . . . 5-37
Pressure . . . . . . . . . . . . . . . . . . . . 10-52
Pressure Light . . . . . . . . . . . . . . . . 5-21
Pressure Monitor System . . . 10-52
Rotation . . . . . . . . . . . . . . . . . . . . 10-57
Sidewall Labeling . . . . . . . . . . . 10-44
Terminology and
Definitions . . . . . . . . . . . . . . . . . 10-47
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . 10-62
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . 10-63
Wheel Replacement . . . . . . . . 10-64
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . 10-58
Towing Driving Characteristics . . . . . . . . 9-53
Equipment . . . . . . . . . . . . . . . . . . . . 9-60
General Information . . . . . . . . . . 9-52
Recreational Vehicle . . . . . . . . 10-78
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 9-56
Trailer Sway Control (TSC) . . . 9-60
Vehicle . . . . . . . . . . . . . . . . . . . . . 10-78 Traction
Control System (TCS) . . . . . . . . 9-40
Control System Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . 5-20
Trailer Sway Control (TSC) . . . . . . . . . . 9-60
Trailer Towing . . . . . . . . . . . . . . . . . 9-56
Transmission
Automatic . . . . . . . . . . . . . . . . . . . . . 9-35
Fluid, Automatic . . . . . . . . . . . . 10-12
Messages . . . . . . . . . . . . . . . . . . . . 5-38
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . 13-8
Trip Odometer . . . . . . . . . . . . . . . . . 5-11
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Turn Signal Bulb Replacement . . . . . . . . . . 10-35
U
Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . 10-62
Universal Remote System . . . . . 5-45
Operation . . . . . . . . . . . . . . . . . . . . . 5-49
Programming . . . . . . . . . . . . . . . . . 5-46
Using this Manual . . . . . . . . . . . . . . . . iv
V
Vehicle Canadian Owners . . . . . . . . . . . . . . . iii
Control . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Design . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Load Limits . . . . . . . . . . . . . . . . . . . 9-22
Messages . . . . . . . . . . . . . . . . . . . . 5-31
Personalization . . . . . . . . . . . . . . . 5-39
Remote Start . . . . . . . . . . . . . . . . . . 2-4
Security . . . . . . . . . . . . . . . . . . . . . . . 2-9
Service Soon Light . . . . . . . . . . . 5-18
Towing . . . . . . . . . . . . . . . . . . . . . . 10-78
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . 10-50
Vehicle Identification Number (VIN) . . . . . . . . . . . . . . . . . 12-1
Service Parts Identification
Label . . . . . . . . . . . . . . . . . . . . . . . . 12-1
Vehicle Reminder Messages . . . . . . . . . . . . . . . . . . . . 5-39
Ventilation, Air . . . . . . . . . . . . . . . . . . 8-9
Visors . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
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