GMC 2007 Savana - Manual (Page 372)

To release the spare tire from the secondary latch,
do the following:
{ CAUTION:
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 the under spare.
1. Check under the
vehicle to see if the
cable end is visible.
If the cable is not visible, start this procedure
at Step 6.
2. Turn the wrench counterclockwise until
approximately 6 inches (15 cm) of cable
is exposed.
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