2008 GMC Sierra 1500 Pickup Owner's Manual - Page 395

2. Assemble the wheel wrench (H) and the two jack handle extensions (I) as shown. 3. Insert the hoist end (open end) (F) of the extension through the hole (G) in the rear bumper. A. Spare Tire (Valve Stem Pointed Down) B. Hoist Assembly C. Hoist Cable D. Tire/Wheel Retainer E. Hoist Shaft F. Hoist End of Extension Tool G. Hoist Shaft Access Hole H. Wheel Wrench I. Jack Handle Extensions J. Spare Tire Lock (If Equipped) 1. If your vehicle is equipped with a spare tire lock, insert the ignition key, turn it clockwise and then pull it to remove the spare tire lock. Be sure the hoist end of the extension connects to the hoist shaft (E). The ribbed square end of the extension is used to lower the spare tire. 5-83