GMC 1997 Safari Owner's Manual page 244

Put the flat end of the extension on an angle through the When the
tire has been
hole in the rear door frame, above the bumper. Be sure lowered, tilt the retainer at
the flat end connects into the hoist shaft. the end of the cable and pull
it
through the wheel opening.
Turn the ratchet counterclockwise to lower the spare tire
to the ground. Keep turning the ratchet until the spare
tire can be pulled out from under the vehicle.
To help avoid vehicle damage, do not drive the
vehicle before cable is restored.
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