2010 GMC SIERRA Owner's Manual

WARNING: (Continued)
3. If you have a four-wheel-drive vehicle, be surethe transfer case is in a drive gear –not in
N (Neutral).
4. Turn off the engine and do not restart while the vehicle is raised.
5. Do not allow passengers to remain in the vehicle.
To be even more certain the vehicle will not move,
put blocks at the front and rear of the tire farthest
away from the one being changed. That would be
the tire on the other side, at the opposite end of
the vehicle. When the vehicle has a flat tire (B), use the following
example as a guide to assist you in the placement of
wheel blocks (A).
A. Wheel Block
B. Flat Tire
The following information explains how to use the jack
and change a tire.
6-91

Removing the Spare Tire and Tools
Crew Cab
A. Wing Nut Retaining Tool Kit
B. Tool Kit
C. Wheel Blocks D. Jack
E. Jack Knob F. Wing Nut Retaining Wheel Blocks
Regular Cab
A. Wing Nut Retaining Tool Kit
B. Tool Kit
C. Wheel Blocks D. Jack
E. Jack Knob F. Wing Nut Retaining Wheel Blocks
6-92

Extended Cab
A. Wing Nut Retaining Tool Kit
B. Tool Kit
C. Wheel Blocks D. Jack
E. Jack Knob 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.
6-93

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 Tool
G. Hoist Shaft Access Hole
H. Wheel Wrench
I. Jack Handle Extensions
J. Spare Tire Lock (If equipped) 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.
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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 spare tire does not lower to the ground, the
secondary latch, if the vehicle has one, may be
engaged causing the tire not to lower. See
Secondary Latch System on page 6‑103.
5. Use the wheel wrench
hook which allows you
to pull the hoist cable
towards you to assist in
reaching the spare tire.
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6. Tilt the tire toward the vehicle with some slackin 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.
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 flat tire.
6-96

Removing the Flat Tire and Installing
the Spare Tire
Use the following pictures and instructions to remove
the flat 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. See Changing a Flat Tire
on page 6‑90for more
information.
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.
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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.3. Use the wheel wrench and turn it counterclockwiseto loosen the wheel nuts. Do not remove the wheel
nuts yet.
6-98