Chevrolet 2007 TrailBlazer Owner's Manua page 487

Turn the wheel wrench counterclockwise to
lower the spare the rest of the way.
13. Tilt the retainer at the end of the cable and
pull it through the wheel opening. Pull the
tire out from under the vehicle.
Notice: If you drive away before the spare tire
or secondary latch system cable has been
reinstalled, you could damage your vehicle.
Always reinstall this cable before driving your
vehicle.
14. Turn the wheel wrench clockwise to raise the
cable back up if the cable is hanging under
the vehicle.
Have the hoist 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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