GMC Sierra 2005 Owner's Manual page 500

Store the tire under the rear of the vehicle in the spare
tire carrier. Use the following art and text to assist you:
A. Spare Tire (Valve Stem
Pointed Down)
B. Hoist Assembly
C. Hoist Cable
D. Tire Retainer
E. Hoist Shaft
F. Hoist End of
Extension Tool
5-106
G. Hoist Shaft
Access Hole
H. Wheel Wrench
I. Jack Handle
Extensions
J. Hoist Lock (If
Equipped)
1. Put the tire on the ground at the rear of the vehicle
with the valve stem pointed down, and to the rear.
3. Attach the wheel wrench (H) and extensions (I)
together.
2. Tilt the retainer (D)
downward and through
the wheel opening.
Make sure the retainer
is fully seated across
the underside of
the wheel.