GMC 2012 Sierra Series Owner's Manual page 482

10-82 Vehicle Care
3. Insert the hoist end (open
end) (F) of the extension through
the hole (G) in the rear bumper.
Do not use the chiseled end of
the wheel wrench.
Be sure the hoist end of the
extension (F) connects to the
hoist shaft. The ribbed square
end of the extension is used to
lower the spare tire.
4. Turn the wheel wrench
counterclockwise to lower the
spare tire to the ground.
Continue to turn the wheel
wrench until the spare tire can
be pulled out from under the
vehicle.
5. Pull the spare tire out from under
the vehicle.
6. Tilt the tire toward the vehicle
with some slack in the cable to
access the tire/wheel retainer.
Tilt the retainer and pull it
through the center of the wheel
along with the cable and spring.
7. Put the spare tire near the
flat tire.
I n f o r ma t i o n P r o v i d e d b y :
Removing the Flat Tire and
Installing the Spare Tire
Use the following pictures and
instructions to remove the flat tire
and raise the vehicle.
A. Jack
B. Wheel Blocks
C. Jack Handle
D. Jack Handle Extension
E. Wheel Wrench