GMC 2008 Acadia - Manual (Page 397)

8. Disconnect the lug wrench from the jack and
carefully remove the jack. Use one hand to push
against the spare tire while firmly pulling the jack out
from under the spare tire with the other hand.
9. Tilt the retainer and slip it through the wheel
opening when the spare tire has been completely
lowered.
10. Turn the lug wrench clockwise to raise the cable
back up if the cable is hanging.
Have the hoist shaft assembly inspected as soon as
you can. You will not be able to store a spare tire using
the hoist assembly until it has been repaired or
replaced.
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