GMC 2007 Canyon - Manual (Page 408)

11. Remove the jack handle and insert the hoist
end of the extension through the hole in the
rear bumper.
Turn the wheel wrench counterclockwise one
turn or until the wheel retainer assembly is
disengaged.
12. Reinsert the jack handle into the jack.
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:
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.
408