2003 GMC Sonoma Owner's Manual - Page 329

Tire Inspection and Rotation Tires should be rotated every 6,000 to 8,000 miles (10 000 to 13 000 km). Any time you notice unusual wear, rotate your 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 5-67 and Wheel Replacement on page 5-70 for more information. Make sure the spare tire is stored securely. Push, pull, and then try to rotate or turn the tire. If it moves, use the wheel wrench to tighten the cable. See Changing a Flat Tire on page 5-73. The purpose of regular rotation is to achieve more uniform wear for all tires on the vehicle. The first rotation is the most important. See "Part A: Scheduled Maintenance Services," in Section 6, for scheduled rotation intervals. When rotating your tires, always use one of the correct rotation patterns shown here. If your vehicle has a compact spare tire or a spare tire that does not match your vehicle's regular road tires and wheels in size and type, do not include the spare in the tire rotation. After the tires have been rotated, adjust the front and rear inflation pressures as shown on the Certificationrrire label. Make certain that all wheel nuts are properly tightened. See "Wheel Nut Torque'' under Capacities and Specifications on page 5-101. 5-66