1995 GMC Sonoma Owner's Manual - Page 260

The purpose of regular rotation is to achieve more uniform wear for all tires on thevehicle. The firstrotation is themost important. See "Scheduled Maintenance Services'' in the Index for scheduled rotation intervals. FRT FRT I) When rotating your tires, always use one of the correct rotation patterns shown here. After the tires have been rotated, adjust the frontrear inflation pressures and as shown on the Certificatioflire label. Make certain all wheel nuts are that properly tightened. See "WheelNut Torque" in the Index. 6-42