Chevrolet 2007 Avalanche Owner's Manual page 544

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.
544
4. Insert the open end
of the extension (F)
through the hole
in the rear
bumper (G) (hoist
shaft access hole).
7. Make sure the tire is stored securely. Push,
pull (A), and then try to turn (B) the tire. If the
tire moves, use the wheel wrench to tighten
the cable.
8. Reinstall the spare tire lock.
9. Close the hoist shaft access cover.