2011 GMC Acadia Owner's Manual - Page 380

10-52 Vehicle Care Reset the Tire Pressure Monitor System. See Tire Pressure Monitor Operation on page 10‑48. Make certain that all wheel nuts are properly tightened. See "Wheel Nut Torque" under Capacities and Specifications on page 12‑2. When rotating the vehicle's tires, always use the correct rotation pattern shown here. If the vehicle has a compact spare tire, do not include it in the tire rotation. After the tires have been rotated, adjust the front and rear inflation pressures as shown on the Tire and Loading Information label. See Tire Pressure on page 10‑45 and Vehicle Load Limits on page 9‑12. Tire Rotation Tires should be rotated every 12 000 km (7,500 miles). See Scheduled Maintenance on page 11‑2. The purpose of a regular tire rotation is to achieve a uniform wear for all tires on the vehicle. This will ensure that the vehicle continues to perform most like it did when the tires were new. The first rotation is the most important. See Scheduled Maintenance on page 11‑2. Any time you notice unusual wear, rotate the tires as soon as possible and check wheel alignment. Also check for damaged tires or wheels. See When It Is Time for New Tires on page 10‑53 and Wheel Replacement on page 10‑59. { WARNING Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if needed, to get all the rust or dirt off. See If a Tire Goes Flat on page 10‑61.