2009 GMC SIERRA Owner's Manual

For regular cab models, the equipment you will need is
behind the passenger’s seat. For extended and crew
cab models, the equipment is on the shelf behind
the passenger’s side second row seat.
1. Turn the knob on the jack counterclockwise to lower
the jack head to release the jack from its holder.
2. Remove the wheel blocks and the wheel block
retainer by turning the wing nut counterclockwise.
3. Remove the wing nut used to retain the storage
bag and tools by turning it counterclockwise.
You will use the jack handle extensions and the wheel
wrench to remove the underbody-mounted spare tire.
A. Spare Tire (Valve
Stem Pointed Down)
B. Hoist Assembly
C. Hoist Cable
D. Tire/Wheel Retainer
E. Hoist Shaft
F. Hoist End of
Extension ToolG. Hoist Shaft Access
Hole
H. Wheel Wrench
I. Jack Handle
Extensions
J. Spare Tire Lock
(If equipped)
5-95

1. Open the spare tire lock cover on the bumper and
use the ignition key to remove the spare tire lock (J).
To remove the spare tire lock, insert the ignition key
turn and pull straight out.
2. Assemble the wheel wrench (H) and the two jack
handle extensions (I) as shown.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 (E). The ribbed square end of
the extension is used to lower the spare tire.
4. Turn the wheel wrench (H) 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.
If the spare tire does not lower to the ground, the
secondary latch is engaged causing the tire not to
lower. SeeSecondary Latch System on page 5-106.
5-96

5. Use the wheel wrench
hook which allows you
to pull the hoist cable
towards you to assist in
reaching the spare tire.
6. Tilt the tire toward the vehicle with some slack in the
cable to access the tire/wheel retainer. Separate the
retainer from the guide pin by sliding the retainer up
the pin while pressing down on the latch.
5-97

Once the retainer is separated from the guide pin,
tilt the retainer and pull it through the center of
the wheel along with the cable and guide latch.
7. Put the spare tire near the at tire.
Removing the Flat Tire and
Installing the Spare Tire
Use the following pictures and instructions to remove
the at tire and raise the vehicle.
The tools you will be using include the jack (A), the
wheel blocks (B), the jack handle (C), the jack handle
extensions (D), and the wheel wrench (E).
1. Do a safety check before proceeding. SeeChanging
a Flat Tire on page 5-92for more information.
5-98

2. If your vehicle has
wheel nut caps, loosen
them by turning the
wheel wrench
counterclockwise.
If the vehicle has a center cap with wheel nut caps,
the wheel nut caps are designed to stay with the
center cap after they are loosened. Remove
the entire center cap.If the wheel has a smooth center cap, place the
chisel end of the wheel wrench in the slot on
the wheel, and gently pry it out.
5-99

3. Use the wheel wrench and turn it counterclockwise
to loosen the wheel nuts. Do not remove the wheel
nuts yet.
4. Position the jack under the vehicle as shown.
If the at tire is on the front of the vehicle
(1500 Model vehicles), position the jack under
the bracket attached to the vehicle’s frame, behind
the at tire. If the at tire is on the front of the
vehicle (all other models), position the jack on
the frame behind the at tire.
Front Position - 1500 Models
5-100

If the at tire is on the rear, for 1500 models,
position the jack under the rear axle about 2 inches
(5 cm) inboard of the shock absorber bracket;
for all other models, position the jack under the rear
axle between the spring anchor and the shock
absorber bracket. Front Position - All Other Models
Rear Position - 1500
ModelsRear Position - All
Other Models
5-101

If you have added a snow plow to the front of your
vehicle, lower the snow plow fully before raising
the vehicle.
Make sure that the jack head is positioned so that
the rear axle is resting securely between the
grooves that are on the jack head.
{CAUTION:
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack, you
could be badly injured or killed. Never get under a
vehicle when it is supported only by a jack.
{CAUTION:
Raising your vehicle with the jack improperly
positioned can damage the vehicle and even
make the vehicle fall. To help avoid personal injury
and vehicle damage, be sure to t the jack lift
head into the proper location before raising the
vehicle.5. Turn the wheel wrench clockwise to raise the vehicle.
Raise the vehicle far enough off the ground so there
is enough room for the spare tire to t under the
wheel well.
6. Remove all the wheel
nuts and take off the
at tire.
5-102