GMC 2011 Sierra Denali Owner's Manual page 424

10-80 Vehicle Care
3. Attach the wheel wrench (H) and
extensions (I) together, as
shown.
4. Insert the hoist end (F) through
the hole (G) in the rear bumper
and onto the hoist shaft.
Do not use the chiseled end of
the wheel wrench.
5. Raise the tire part way upward.
Make sure the retainer is seated
in the wheel opening.
6. Raise the tire fully against the
underside of the vehicle by
turning the wheel wrench
clockwise until you hear two
clicks or feel it skip twice. You
cannot overtighten the cable.