2007 CHEVROLET SUBURBAN traction control

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 specied
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 signicantly 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 specied
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.
527

Tire Chains
{CAUTION:
If your vehicle has P265/65R18 or
P275/55R20 size tires, do not use tire
chains. They can damage your vehicle
because 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.
CAUTION: (Continued)
CAUTION: (Continued)
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 rear tires.
Notice:If your vehicle has P265/70R17 size
tires, use tire chains only where legal and only
when you must. Use chains that are the proper
size for your vehicle’s tires. Install them on the
rear tires only.
Do not use chains on the front tires.
Tighten them as tightly as possible with the
ends securely fastened. Drive slowly and follow
the chain manufacturer’s instructions. If you
can hear the chains contacting your 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 your vehicle.
530

Tires (cont.)
Spare Tire................................................ 552
Storing a Flat or Spare Tire and Tools......... 547
Tire Sidewall Labeling.............................. 508
Tire Terminology and Denitions............... 512
Uniform Tire Quality Grading.................... 527
Wheel Alignment and Tire Balance........... 528
Wheel Replacement................................. 528
When It Is Time for New Tires................. 523
Tow/Haul Mode........................................... 149
Tow/Haul Mode Light................................... 259
Towing
Recreational Vehicle................................. 418
Towing a Trailer....................................... 422
Your Vehicle............................................. 417
Traction
StabiliTrak
®System................................. 363
Trailer
Recommendations.................................... 440
Transmission
Fluid, Automatic....................................... 466
Transmission Operation, Automatic.............. 145
Trip Odometer............................................. 244
Turn and Lane-Change Signals................... 206
Turn Signal/Multifunction Lever.................... 205
U
Ultrasonic Rear Parking Assist (URPA)........ 222
Understanding Radio Reception................... 352
Uniform Tire Quality Grading....................... 527
Universal Home Remote System................. 178
Operation........................................178, 182
System Identication................................ 177
V
Vehicle
Control..................................................... 360
Damage Warnings....................................... 5
Loading.................................................... 407
Symbols...................................................... 5
Vehicle Customization, DIC......................... 280
Vehicle Data Collection and Event Data
Recorders................................................ 609
Vehicle Identication
Number (VIN).......................................... 562
Service Parts Identication Label.............. 563
Ventilation Adjustment.................................. 238
Visors.......................................................... 134
Voltmeter Gage........................................... 249
633