Chevrolet UPLANDER 2007 Owner's Manual page 512

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 spare.
512
To release the spare tire from the secondary latch,
do the following:
1. Place the jack under the vehicle, ahead of the
rear bumper. Position the center lift point of the
jack under the center of the compact spare tire.
2. Turn the folding wrench clockwise to raise the
jack until it lifts the secondary latch device
under the wheel plate.
3. Keep raising the jack until the compact spare
tire stops moving upward and is held firmly in
place. This lets you know that the secondary
latch has released.