2003 GMC Sierra 1500 Pickup Owner's Manual - Page 450

I FRT FRT 1 If your vehicle has single rear wheels and the tread design for your front tires is the same as your rear tires, always use one of the correct rotation patterns shown here when rotating your tires. If your vehicle has front tires with different tread designs (such as all season vs. on/off road) than the rear tires, don't rotate your tires front to rear. If your vehicle has dual rear wheels and the tread design for your front tires is the same as your rear tires, always use one of the correct rotation patterns shown here when rotating your tires. 5-75