GMC 2012 Sierra Denali Owner's Manual page 412

10-74 Vehicle Care
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. Open the spare tire hoist access
hole cover on the bumper and
use the ignition key to remove
the spare tire lock.
To remove the spare tire lock,
insert the ignition key, turn it
clockwise, and pull the lock
straight out.
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.
Be sure the hoist end of the
extension connects to the hoist
shaft. The ribbed square end of
the extension is used to lower
the spare tire.
4. Turn the wheel wrench
counterclockwise to lower the
spare tire to the ground.
Continue to turn the wheel
wrench until the spare tire can
be pulled out from under the
vehicle.