Headlamp Aiming........................................ 342
Bulb Replacement....................................... 342
Halogen Bulbs........................................... 342
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps............. 343
Taillamps, Stoplamps and
Back-up Lamps...................................... 345
Back-Up Lamps......................................... 345
License Plate Lamp................................... 346
Replacement Bulbs................................... 346
Windshield Wiper Blade Replacement....... 347
Tires............................................................ 349
Tire Sidewall Labeling............................... 350
Tire Terminology and De nitions............... 354
In ation - Tire Pressure............................. 357
Tire Pressure Monitor System................... 358Tire Inspection and Rotation...................... 362
When It Is Time for New Tires.................. 364
Buying New Tires...................................... 364
Different Size Tires and Wheels................ 366
Uniform Tire Quality Grading..................... 367
Wheel Alignment and Tire Balance............ 368
Wheel Replacement.................................. 368
Tire Chains............................................... 370
If a Tire Goes Flat.................................... 371
Changing a Flat Tire................................. 372
Removing the Spare Tire and Tools.......... 373
Removing the Flat Tire and Installing
the Spare Tire....................................... 375
Storing a Flat or Spare Tire and Tools...... 382
Compact Spare Tire.................................. 384
Section 5 Service and Appearance Care
294
Tire Sidewall Labeling
Useful information about a tire is molded into its
sidewall. The examples below show a typical
passenger vehicle tire and a compact spare tire
sidewall.(A) Tire Size:The tire size is a combination of
letters and numbers used to de ne a particular
tire’s width, height, aspect ratio, construction type,
and service description. See the “Tire Size”
illustration later in this section for more detail.
(B) TPC Spec (Tire Performance Criteria
Speci cation):Original equipment tires designed
to GM’s speci c tire performance criteria have
a TPC speci cation code molded onto the sidewall.
GM’s TPC speci cations meet or exceed all
federal safety guidelines.
(C) DOT (Department of Transportation):
The Department of Transportation (DOT) code
indicates that the tire is in compliance with the
U.S. Department of Transportation Motor Vehicle
Safety Standards.
Passenger (P-Metric) Tire Example
350