2005 GMC Savana Van Owner's Manual - Page 299

Single Rear Wheels If your vehicle has single rear wheels, always use the correct rotation pattern shown here when rotating your vehicle's tires. Do not include the spare tire in the tire rotation. Dual Rear Wheels If your vehicle has dual rear wheels, always use one of the correct rotation patterns shown here when rotating your tires. When you install dual wheels, be sure that vent holes in the inner and outer wheels on each side are lined up. 5-61