Workshop Repair and Service Manuals GMC SIERRA
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Wheels and Tires

When It Is Time for New Tires      Factors, such as maintenance, temperatures, driving speeds, vehicle loading, and road conditions affect the wear rate of the tires. Treadwear indicators are one way to tell when it is time for new tires. Treadwear...
TPMS Sensor Matching Process      Each TPMS sensor has a unique identification code. The identification code needs to be matched to a new tire/wheel position after rotating the vehicle’s tires or replacing one or more of the TPMS sensors. Also, the TPMS sensor...
Tire Sidewall Labeling      Useful information about a tire is molded into the sidewall. The examples show a typical passenger and light truck tire sidewall. Passenger (P-Metric) Tire (A) Tire Size: The tire size code is a combination of...
Tire Rotation      Tires should be rotated every 12 000 km (7,500 mi). See Maintenance Schedule on page 11?3. Tires are rotated to achieve a uniform wear for all tires. The first rotation is the most important. Any time unusual wear is...
Tire Pressure Monitor Operation      This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS is designed to warn the driver when a low tire pressure condition exists. TPMS sensors are mounted onto each tire and wheel assembly, excluding the spare...
Tire Designations      Tire Size The examples show a typical passenger vehicle and light truck tire size. Passenger (P-Metric) Tire (A) Passenger (P-Metric) Tire: The United States version of a metric tire sizing system. The...
Storing a Flat or Spare Tire and Tools      WARNING Storing a jack, a tire, or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place....
Removing the Spare Tire and Tools      Crew Cab A. Wing Nut Retaining Tool Kit B. Tool Kit C. Wheel Blocks D. Jack E. Jack Knob F. Wing Nut Retaining Wheel Blocks Regular Cab A. Wing Nut Retaining Tool Kit B. Tool Kit C. Wheel...
Removing the Flat Tire and Installing the Spare Tire      Use the following pictures and instructions to remove the flat tire and raise the vehicle. A. Jack B. Wheel Blocks C. Jack Handle D. Jack Handle Extension E. Wheel Wrench The tools you will be using include...
If a Tire Goes Flat      It is unusual for a tire to blowout while driving, especially if the tires are maintained properly. If air goes out of a tire, it is much more likely to leak out slowly. But if there ever is a blowout, here are a few tips...
Full-Size Spare Tire      Your vehicle, when new, had a fully-inflated spare tire. A spare tire may lose air over time, so check its inflation pressure regularly. See Tire Pressure on page 10?62 and Vehicle Load Limits on page 9?17 for information...
Tire Chains      WARNING If the vehicle has dual wheels or P265/65R18, P275/55R20, LT265/70R17, LT265/70R18, LT265/60R20, P285/50R20, P285/45R22 or 285/45R22 size tires, do not use tire chains. They can damage the vehicle because there is...
Wheel Replacement      Replace any wheel that is bent, cracked, or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts and wheel nuts should be replaced. If the wheel leaks air, replace it. Some aluminum wheels...
Wheel Alignment and Tire Balance      The tires and wheels were aligned and balanced at the factory to provide the longest tire life and best overall performance. Adjustments to wheel alignment and tire balancing will not be necessary on a regular basis. However,...
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...
Different Size Tires and Wheels      If wheels or tires are installed that are a different size than the original equipment wheels and tires, vehicle performance, including its braking, ride and handling characteristics, stability, and resistance to rollover may...
Buying New Tires      GM has developed and matched specific tires for the vehicle. The original equipment tires installed were designed to meet General Motors Tire Performance Criteria Specification (TPC Spec) system rating. When replacement tires...
Dual Tire Rotation      When the vehicle is new, or whenever a wheel, wheel bolt, or wheel nut is replaced, check the wheel nut torque after 160, 1 600, and 10 000 km (100, 1,000, and 6,000 mi) of driving. For proper torque and wheel nut...
Tire Inspection      We recommend that the tires, including the spare tire, if the vehicle has one, be inspected for signs of wear or damage at least once a month. Replace the tire if: • The indicators at three or more places around the tire...
TPMS Malfunction Light and Message      The TPMS will not function properly if one or more of the TPMS sensors are missing or inoperable. When the system detects a malfunction, the low tire pressure warning light flashes for about one minute and then stays on for...
Tire Pressure Monitor System      The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. The TPMS sensors monitor the air pressure in your tires and transmit tire pressure readings to a receiver located in the...
Tire Pressure for High-Speed Operation      WARNING Driving at high speeds, 160 km/h (100 mph) or higher, puts an additional strain on tires. Sustained high-speed driving causes excessive heat buildup and can cause sudden tire failure. You could have a crash...
How to Check      Use a good quality pocket-type gauge to check tire pressure. Proper tire inflation cannot be determined by looking at the tire. Check the tire inflation pressure when the tires are cold, meaning the vehicle has not been...