Chevrolet 2005 Tahoe Owner's Manual page 459

To release the spare tire from the secondary latch,
do the following:
1. Check under the vehicle to see if the cable end
is visible.
If the cable is not visible proceed to Step 6.
2. If it is 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 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 5 of Removing the Spare Tire and Tools on
page 5-83.
5. If the spare does not lower, turn the wrench
counterclockwise until approximately 6 inches
(15 cm) of cable is exposed.
6. Stand the wheel blocks on their shortest ends,
with the backs facing each other.
7. Place the bottom edge
of the jack (A) on the
wheel blocks (B),
separating them
so that the jack is
balanced securely.
5-93