Uniform Tire Quality Grading
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 specified government test course. For
example, a tire graded 150 would wear one and a half
(1 1/2) 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.
Traction -- A, B, C
The traction grades, from highest to lowest, are A, B,
and C, and they 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.
Warning: The traction grade assigned to this tire
is based
on braking (straight ahead) traction tests and does not
include cornering (turning) traction.
6-53
ProCarManuals.com
Section 9 Index
Air Bag ...................................... 1-20
How Does it Restrain
.......................... 1-24
How it Works
................................ 1-22
Location
.................................... 1-22
Readiness Light
......................... 1.21. 2.74
Servicing
................................... 1-26
What Makes it Inflate
.......................... 1-24
What Will
You See After it Inflates ............... 1-24
When Should it Inflate
......................... 1-23
Aircleaner
.................................... 6-17
Air Conditioning
................................ 3-5
Air Conditioning Refrigerants
..................... 6-77
Air Control. Climate Control System ............. 3.3. 3-4
Alarm. Content Theft-Deterrent
................... 2- 16
Alignment and Balance. Tire
....................... 6-54
Aluminum Wheels. Cleaning
...................... 6-62
Antenna. Heated Backlite
........................ 3-35
Antifreeze
..................................... 6-24
Anti-Lock
Brake System Warning Light
................ 2-76. 4-7
Brakes
...................................... 4-7
Anti.Theft. Radio
.............................. 3-30
Air Filter. Passenger Compartment .................. 3-7
Alarm. Instant. Keyless Entry
...................... 2-9 Appearancecare
............................... 6-56
Appearance Care Materials
....................... 6-65
Arbitration Program
.............................. 8-7
Armrest. Storage
.......................... 2.59. 2.60
Astroroof
..................................... 2-64
Audio Controls, Steering Wheel Touch Control
....... 3-32
Audio Equipment, Adding
........................ 3-33
Audio Systems
................................. 3-10
Automatic
Overdrive
................................... 2-25
Transaxle Check
.............................. 7-40
Transaxle Fluid
............................... 6-21
Ashtrays
...................................... 2-61
Transaxle Operation
........................... 2-23
Transaxle Park Mechanism Check
................ 7-42
Auxiliary Power Outlets
.......................... 2-63
Battery
................... ................ 6-34
Jump Starting
................................. 5-3
Replacement. Keyless Entry
.................... 2-13
Rundown Protection
........................... 2-49
WarningLight
............................... 2-74
Warnings
................................ 5.3. 5.4
9-1
ProCarManuals.com
Leather ..................................... 6-59
Outside of Your Buick
......................... 6-61
Speakercovers
.............................. 6-59
Special Problems
............................. 6-58
Stains
...................................... 6-58
Tires
....................................... 6-63
Vinyl
....................................... 6-59
Wheels
..................................... 6-62
Windshield and Wiper Blades
................... 6-60
Climate Control. Passenger
........................ 3-9
Climate Control. Steering Wheel Touch Control
........ 3-9
Climate Control System
........................... 3-2
Clock. Setting the
............................... 3- 10
Coinholder
.................................... 2-59
Comfort Controls
................................ 3-2
Personal Choice
............................... 3-2
Steering Wheel Touch Control
.................... 3-9
Compact Disc Care
............................. 3-35
Compact Disc Player
....................... 3-18. 3-21
Compact Disc Player Errors
............. 3.20.3-25. 3-28
Compact Spare Tire
............................. 5-32
Compass. Rearview Mirror with
................... 2-51
Content Theft-Deterrent System
................... 2- 16
Control of a Vehicle
.............................. 4-6
ConvenienceNet
............................... 2-61
Convex Outside Mirror
.......................... 2-55
Heater. Engine
............................... 2-22
RecoveryTarik
.......................... 5.15. 5.16
Cooling System
................................ 5-14
Coolant
....................................... 6-24 Cornering
Lamps
............................... 2-45
Courtesy Lamps
................................. 2-46
Courtesy Transportation
........................... 8-6
Cruise Control
................................. 2-39
Cupholders
............................... 2.59. 2.60
Customer Assistance for Text Telephone Users
......... 8-4
Customer Assistance Information
................... 8-1
Customer Satisfaction Procedure
.................... 8-2
Damage. Finish
............................... 6-63
Damage. Sheet Metal
............................ 6-63
Daytime Running Lamps
......................... 2-45
Dead Battery
................................... 5-3
Defects. Reporting Safety
..................... 8-8. 8-9
Defensive Driving
............................... 4-2
Defogger. Rear Window
.......................... 3-8
Defogging ..................................... 3-8
Defrosting ..................................... 3-8
Delayed Locking
.......................... 2.11. 2.90
Dimensions. Vehcle
............................ 6-78
Dolby@ B Noise Reduction
.................. 3.13. 3.17
Door
Ajar Reminder ........................... 2.5. 2.88
Central Unlocking System
....................... 2-5
Driver Information Center
........................ 2-84
Controls and Displays
......................... 2-85
Personal Choice Programming ................... 2-88
Warnings and Messages
........................ 2-88
DIC
.......................................... 2-84
Locks
....................................... 2-4
9-3
ProCarManuals.com
DriverPosition ................................. 1-13
Driving City
........................................ 4-21
Defensive
.................................... 4-2
Drunken
..................................... 4-2
Freeway
.................................... 4-22
InaBlizzard
................................. 4-28
In Foreign Countries
........................... 6-5
In the Rain
.................................. 4- 18
Night
...................................... 4-16
On Curves
.................................. 4-11
On Grades While Towing a Trailer
............... 4-38
On Hill and Mountain Roads
.................... 4-24
OnSnowandIce
............................. 4-27
Throughwater
............................... 4-20
WetRoads
.................................. 4-18
Winter
...................................... 4-26
With a Trailer
................................ 4-36
Drunken Driving
................................ 4-2
Dual Automatic ComforTemp Climate Control
......... 3-2
Electrical Equipment, Adding
.......... 2-22,3-33, 6-67
Electrical System
............................... 6-67
Electrochromic Day/Night Rearview Mirror
.......... 2-50
With Compass ............................... 2-51
Electronic Level Control
......................... 4-32
Engine
....................................... 6-11
Accessory Belt
.......................... 6-78, 6-79
Coolant
..................................... 6-24
Coolant Heater
............................... 2-22 Coolant
Level Check
.......................... 7-39
Coolant Temperature Gage
..................... 2-77
Exhaust
................. 2.15.2.31.2.32. 4 .29. 4.35
Identification
................................ 6-66
OilLevelCheck
.............................. 7-39
OilLifeIndex
................................ 2-87
Overheating
................................. 5-12
Specifications
................................ 6-65
Starting
..................................... 2-21
Supercharged
................................ 6-12
Engineoil
.................................... 6-12
Adding
..................................... 6-14
Additives
................................... 6-16
Checking
................................... 6-13
Pressure Light
............................... 2-80
Used
....................................... 6-17
Whentochange
.............................. 6-16
Entry Lighting, Delayed
.......................... 2-46
Exhaust, Engine
................. 2-15,2-31,2-32, 4-35
Exit Lighting, Delayed
........................... 2-47
Express-Down Window
.......................... 2-33
Express-Open Astroroof
......................... 2-64
Fabric Cleaning
.......................... 6-57, 6-58
Fan Control, Climate Control System
................ 3-3
Filling Your Tank
................................ 6-6
Filter, Air
..................................... 6-17
Filter, Engine Oil
............................... 6-16
Filter, Passenger Compartment Air
.................. 3-7
Running
While Parked
......................... 2-32
9-4
ProCarManuals.com
Net. Convenience .............................. 2-61
Neutral. Automatic Transaxle
..................... 2-25
New Vehicle Break-In
........................... 2-19
Nightvision
................................... 4-17
Normal Maintenance Replacement Parts
............. 6-78
Odometer
.................................... 2-72
Odometer. Trip
................................. 2-72
Off-Road Recovery
............................. 4- 13
Oil. Engine .................................... 6-12
OilLifeIndex
.................................. 2-87
Oil Pressure Light
.............................. 2-80
Oil. Supercharger
............................... 6-20
Opener. Garage Door ....................... 2-56. 2-64
Outside Mirrors
................................ 2-54
Overdrive. Automatic Transaxle
................... 2-25
Overheating Engine
............................. 5 - 12
Owner Checks and Services
....................... 7-39
Owner Publications. Ordering
..................... 8- 10
Paint Spotting. Chemical
........................ 6-64
ParadeDimming
............................... 2-49
Park
Automatic Transaxle
.......................... 2-24
Shifting Into
................................. 2-28
Shifting Out of
............................... 2-30
AtNight
.................... ....... 2-15
Brake
................... ......... 2-27
Parking Brake
Mechanism Check
....................... 7-42
Over Things That Burn
........................ 2-31
With a Trailer
................................ 4-38
Passenger Climate Control
......................... 3-9
Passenger Compartment Air Filter
................... 3-7
PASS-Key I11 2-17
Perimeter Lighting
......................... 2.47. 2.92
Periodic Maintenance Inspections
.................. 7-43
Personal Choice Comfort Controls
.............................. 3-2
DICDisplay
................................. 2-85
Radio Controls
............................... 3-10
Personal Choice Features
......................... 2-10
Delayed Loclung
........................ 2.11. 2.90
Memory Door Locks
...................... 2.5. 2.90
Perimeter Lighting
....................... 2.47. 2.92
Programming. DIC
............................ 2-88
Security Feedback
....................... 2- 11. 2.91
DoorLocks
................................... 2-5
Remote Control Mirror
........................ 2-54
Seat
......................................... 1-2
Seatback Recliner
.............................. 1-5
Steering Fluid
................................ 6-28
Windows
................................... 2-33
Power. Retained Accessory
........ ............ 2-21
Lots
....................................... 2-16
Passing
...................................... 4-13 6 ................................
Power Steering
.................................... 4-10
9-8
ProCarManuals.com
Shoulder Belt Height Adjuster ..................... 1-15
Signaling Turns
................................ 2-35
Skidding
...................................... 4-15
Sound Equipment. Adding ........................ 3-33
Spare Tire. Compact
............................. 5-34
Speaker Covers. Cleaning
........................ 6-59
Specifications and Capacities
...................... 6-76
Specifications. Engine
........................... 6-77
Speech Impaired. Customer Assistance
............... 8-4
Speedometer
................................... 2-72
SRS ......................................... 1-20
Stains. Cleaning
................................ 6-58
Starter Switch Check
............................ 7-41
Starting Your Engine
............................ 2-21
Steam
........................................ 5-12
Steering
...................................... 4-10
In Emergencies
............................... 4- 12
Magnasteer
Rrf ................................ 4- 10
Power
...................................... 4-10
Tips
........................................ 4-11
Wheel. Tilt .................................. 2-34
Steering Wheel Touch Controls
................ 3-9. 3-32
Storageheas
.................................. 2-55
Storage. Vehicle
................................ 6-34
Stuck: In Sand. Mud. Ice or Snow
.................. 5-33
Sunvisors
.................................... 2-62
Supercharged Engine
............................ 6- 12
Superchargeroil
............................... 6-20
Supplemental Restraint System
.................... 1-20
Symbols. Vehicle
.................................. x
Tachometer .................................. 2-72
Taillamp Bulb Replacement
....................... 6-40
Tape Player Care
............................... 3-34
Theater Dimming
............................... 2-47
Theft
......................................... 2-15
Theft-Deterrent
................................ 2-16
Alarmsystem
................................ 2-16
Radio
...................................... 3-30
Thermostat
.................................... 6-28
Third Gear. Automatic Transaxle
................... 2-25
Tilt Steering Wheel
............................. 2-34
Time. Setting the
............................... 3-10
Tire Chains
.................................... 6-56
TireLoading
................................... 4-30
Tire-Loading Information Label
................... 4-30
Tires
......................................... 6-47
Alignment and Balance
........................ 6-54
BuyingNew
................................. 6-52
Chains
..................................... 6-56
Changing a Flat .............................. 5-22
Cleaning
.................................... 6-63
Compact Spare
............................... 5-34
Inflation
.................................... 6-48
Inflation Check
............................... 7-39
Inspection and Rotation
........................ 6-50
Loading
.................................... 4-30
Pressure
.................................... 6-48
Temperature
................................. 6-54
Temperature
Control. Climate Control System
......... 3-3
THEFTLOCK"
................................ 3-30
ProCarManuals.com