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.
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.
5-57
Fuses Usage
APO Accessory Power Outlet
RFA BATT Remote Keyless Entry System
MIR/DLCPower Mirror/Diagnostic Link
Connector
LT HDLP Left Headlamp
RDO/INTLP Radio, Interior Lamps, OnStar
®
RT HDLP Right Headlamps
CLSTR Instrument Panel Cluster
EXT LP Exterior Lamps
CIG Cigarette Lighter
FOG Fog Lamps
HORN Horn
Blank Not Used
Blank Not Used
STOP/HZD Stop Lamps, Hazard Lamps
Fuses Usage
Blank Not Used
Blank Not Used
RR DEFOG Rear Window Defogger
PWR ACC Power Door Locks
Blank Not Used
Blank Not Used
Blank Not Used
O2 HTR Oxygen Sensor Heater
HVAC Climate Control System
WIPER Windshield Wiper
BCM Body Control Module
AMPL Audio Ampli er
PWR WDO Power Windows, Sunroof
RELAY DRL Daytime Running Lamps (Relay)
Blank Not Used
5-83
Care of
Safety Belts................................................5-75
Your CD Player...........................................3-68
Your CDs ...................................................3-68
Cassette Tape Player Service...........................6-18
CD Messages................................3-42, 3-51, 3-66
Center Console Storage Area...........................2-34
Chains, Tires..................................................5-60
Charging System Light....................................3-24
Check
Engine Light...............................................3-29
Gages Warning Light...................................3-33
Check Engine Light.........................................3-29
Checking Coolant............................................5-22
Checking Engine Oil........................................5-13
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-78
Child Restraints
Child Restraint Systems...............................1-34
Infants and Young Children...........................1-31
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-40
Older Children.............................................1-29
Securing a Child Restraint Designed
for the LATCH System..............................1-42
Securing a Child Restraint in a Rear
Seat Position...........................................1-42Child Restraints (cont.)
Securing a Child Restraint in the
Right Front Seat Position..........................1-44
Top Strap...................................................1-38
Top Strap Anchor Location............................1-39
Where to Put the Restraint...........................1-37
Chime Level Adjustment..................................3-68
Cigarette Lighter.............................................3-16
Cleaning
Inside of Your Vehicle..................................5-73
Outside of Your Vehicle................................5-75
Underbody Maintenance...............................5-78
Weatherstrips..............................................5-75
Cleaning Aluminum or Chrome-Plated Wheels.....5-77
Cleaning Exterior Lamps/Lenses.......................5-76
Cleaning Fabric/Carpet....................................5-73
Cleaning Glass Surfaces..................................5-75
Cleaning Interior Plastic Components.................5-74
Cleaning the Top of the Instrument Panel...........5-74
Cleaning Tires................................................5-77
Cleaning Vinyl................................................5-74
Cleaning Windshield and Wiper Blades..............5-76
Climate Control System...................................3-16
Outlet Adjustment........................................3-19
Clutch, Hydraulic.............................................5-19
Compact Spare Tire........................................5-72
Content Theft-Deferrent....................................2-14
3
