2009 GMC SIERRA lock

Changing a Flat Tire
If a tire goes at, avoid further tire and wheel damage
by driving slowly to a level place. Turn on the hazard
warning ashers. SeeHazard Warning Flashers
on page 3-8.
{CAUTION:
Changing a tire can be dangerous. The vehicle
can slip off the jack and roll over or fall on you or
other people. You and they could be badly injured
or even killed. Find a level place to change your
tire. To help prevent the vehicle from moving:
1. Set the parking brake rmly.
2. Put the shift lever in P (Park).
3. If you have a four-wheel-drive vehicle,
be sure the transfer case is in a drive
gear – not in N (Neutral).
CAUTION: (Continued)
CAUTION: (Continued)
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 at tire (B), use the following
example as a guide to assist you in the placement
of wheel blocks (A).
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A. Wheel Block
B. Flat Tire
The following information explains how to use the jack
and change a tire.
Removing the Spare Tire and Tools
A. Wing Nut Retaining
Tool Kit
B. Tool Kit
C. Wheel BlocksD. Jack
E. Jack Knob
F. Wing Nut Retaining
Wheel Blocks
Crew Cab
5-93

A. Wing Nut Retaining
Tool Kit
B. Tool Kit
C. Wheel BlocksD. Jack
E. Jack Knob
F. Wing Nut Retaining
Wheel BlocksA. Wing Nut Retaining
Tool Kit
B. Tool KitC. Wheel Blocks
D. Jack
E. Jack Knob Regular Cab
Extended Cab
5-94

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)
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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

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.
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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