2007 CHEVROLET SILVERADO 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.
575

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:
If your vehicle has dual wheels or
P265/65R18, P275/55R20 or LT265/70R17
size tires, do not use tire chains. They can
CAUTION: (Continued)
CAUTION: (Continued)
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. 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.
578

Tires (cont.)
Tire Terminology and Denitions............... 558
Uniform Tire Quality Grading.................... 575
Wheel Alignment and Tire Balance........... 576
Wheel Replacement................................. 576
When It Is Time for New Tires................. 571
Tow/Haul Mode........................................... 146
Tow/Haul Mode Light................................... 268
Towing
Recreational Vehicle................................. 442
Towing a Trailer....................................... 447
Your Vehicle............................................. 441
Traction
StabiliTrak
®System................................. 384
Trailer
Recommendations.................................... 484
Transmission
Fluid, Automatic....................................... 510
Transmission Operation, Automatic.............. 140
Trip Odometer............................................. 250
Truck-Camper Loading Information.............. 438
Turn and Lane-Change Signals................... 215
Turn Signal/Multifunction Lever.................... 214
U
Ultrasonic Rear Parking Assist (URPA)........ 230
Understanding Radio Reception................... 371
Uniform Tire Quality Grading....................... 575
Universal Home Remote System................. 187
Operation........................................187, 191
System Identication................................ 186
V
Vehicle
Control..................................................... 380
Damage Warnings....................................... 5
Loading.................................................... 427
Symbols...................................................... 5
Vehicle Customization, DIC......................... 291
Vehicle Data Collection and Event Data
Recorders................................................ 659
Vehicle Identication
Number (VIN).......................................... 610
Service Parts Identication Label.............. 611
Vehicle Privacy............................................ 659
Ventilation Adjustment.................................. 247
683