Chevrolet 2009 Avalanche Owner's Manual page 474

9. Position the center lift point of the jack under the
center of the spare tire.
5-94
10. Turn the wrench clockwise to raise the jack until it
lifts the end fitting.
11. Continue raising the jack until the spare tire stops
moving upward and is held firmly in place. The
secondary latch has released and the spare tire is
balancing on the jack.
12. Lower the jack by turning the wheel wrench
counterclockwise. Keep lowering the jack until the
spare tire slides off the jack or is hanging by
the cable.
CAUTION:
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Someone standing too close during the procedure
could be injured by the jack. If the spare tire does
not slide off the jack completely, make sure no
one is behind you or on either side of you as you
pull the jack out from under the spare.