GMC Yukon XL Denali Owner's Manual page 394

10-78 Vehicle Care
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 under Removing the
Spare Tire and Tools under Tire
Changing on page 10 66.
5. If the spare does not lower, turn
the wrench counterclockwise
until approximately 15 cm (6 in)
of cable is exposed.
6. Stand the wheel blocks on their
shortest ends, with the backs
facing each other.
A. Jack
B. Wheel Blocks
7. Place the bottom edge of the
jack (A) on the wheel blocks (B),
separating them so that the jack
is balanced securely.
8. Attach the jack handle,
extension, and wheel wrench to
the jack and place it (with the
wheel blocks) under the vehicle
toward the front of the rear
bumper.