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
CRUISE Cruise Control Module/Switch
ABS Anti-Lock Brake (Ignition)
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 WDOPower Windows, Sunroof
(Circuit Breaker)
RELAY DRL Daytime Running Lamps (Relay)
Blank Not Used
5-83
Child Restraints (cont.)
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-39
Older Children.............................................1-27
Securing a Child Restraint Designed for the
LATCH System........................................1-41
Securing a Child Restraint in a Rear Seat
Position..................................................1-41
Securing a Child Restraint in the Right Front
Seat Position...........................................1-43
Top Strap...................................................1-37
Top Strap Anchor Location............................1-38
Where to Put the Restraint...........................1-36
Chime Level Adjustment..................................3-71
Cigarette Lighter.............................................3-17
Cleaning
Aluminum or Chrome-Plated Wheels..............5-76
Exterior Lamps/Lenses.................................5-75
Fabric/Carpet..............................................5-72
Finish Care.................................................5-75
Glass Surfaces............................................5-74
Instrument Panel.........................................5-74
Interior Plastic Components...........................5-74
Tires..........................................................5-77
Underbody Maintenance...............................5-78
Vinyl..........................................................5-74
Washing Your Vehicle...................................5-75Cleaning (cont.)
Weatherstrips..............................................5-75
Windshield and Wiper Blades........................5-76
Climate Control System...................................3-18
Outlet Adjustment........................................3-20
Clutch, Hydraulic.............................................5-19
Comfort Guides, Rear Safety Belt.....................1-24
Compact Spare Tire........................................5-71
Content Theft-Deterrent....................................2-14
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-35
Coolant
Engine Temperature Gage............................3-29
Heater, Engine............................................2-19
Low Warning Light.......................................3-30
Surge Tank Pressure Cap.............................5-23
Cooling System..............................................5-25
Cruise Control Lever.......................................3-10
Cupholder(s)..................................................2-35
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-5
3
