Chevrolet 2007 TrailBlazer Owner's Manua page 485

To release the spare tire from the secondary latch,
do the following:
2. If visible, first try to tighten the cable by
turning the wheel wrench clockwise until
you hear two clicks or feel it skip twice.
You cannot overtighten the cable.
3. Loosen the cable by turning the wheel wrench
counterclockwise three or four turns.
4. Repeat this procedure at least two times.
If the spare tire lowers to the ground,
continue with Step 2 of Removing the Spare
Tire and Tools on page 476.
1. Check under the
vehicle to see if the
cable is visible.
If it is not visible,
proceed to Step 6.
5. Turn the wrench counterclockwise until
approximately 6 inches (15 cm) of cable
is exposed.
6. Attach the jack handle, extension(s) and the
wheel wrench to the jack and place it under
the vehicle towards the front of the rear
bumper. Position the center lift point of the
jack under the center of the spare tire.
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