GMC SIERRA 2020 Owner's Manual page 418

5. Insert the hoist end (10)
through the hole (9) in the rear
bumper and onto the hoist
shaft.
Do not use the chiseled end of
the wheel wrench.
6. Raise the tire part way upward.
Make sure the retainer is
seated in the wheel opening.
7. If equipped with a spare tire
cable, orient the cable by
rotating the spare tire so that
the cable is by the frame
attachment location.
8. 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.
Vehicle Care
9. Make sure the tire is stored
securely. Push, pull, and then
try to turn the tire. If the tire
moves, use the wheel wrench
to tighten the cable.
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