service HUMMER H3 2009 Owners Manual

The following tools are used to
remove the spare tire and at tire.
A. Wheel Wrench
B. Jack Handle Extensions
C. Jack Handle
D. Jack
E. Wheel BlocksTo access the spare tire:
A. Spare Tire/Flat Tire
(Valve Stem Pointed Down)
B. Tire/Wheel Retainer
C. Hoist Cable
D. Hoist Assembly
E. Hoist Shaft
F. Jack Handle Extension(s)
G. Wheel Wrench
H. Hoist Shaft Access Ramp
I. Hoist End of the Extension Tool1. Assemble the two jack handle
extensions (F) and wheel
wrench (G).
2. Insert the hoist end of the
extension tool (I) through
the hoist shaft access ramp (H).
5-70 Service and Appearance Care

3. The hoist end of the extension
tool (I) must connect to the
hoist shaft (E). The hoist end of
the extension tool is used to
lower the spare tire.
Do not use the chiseled end of
the wheel wrench.
4. Turn the wheel wrench (G)
counterclockwise to lower
the spare tire (A) to the ground.
Continue to turn the wheel
wrench (G) until the spare tire (A)
can be pulled from under the
vehicle.
If the spare tire does not lower
to the ground, the secondary
latch is engaged. SeeSecondary
Latch System (H3T) on
page 5-76.5. Pull the spare tire towards you.
6. Tilt the tire, with slack in the
cable, to access the tire/wheel
retainer (B).7. Separate the retainer from the
guide pin by sliding the retainer
up the pin while pressing down
on the latch. When 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 pin.
8. Put the spare tire near the
at tire.
Service and Appearance Care 5-71

Removing the Flat Tire
and Installing the
Spare Tire
1. Do a safety check before
proceeding. SeeChanging a
Flat Tire on page 5-66for
more information.
2. Remove the center cap by
placing the at end of the wheel
wrench in the slot on the wheel
and gently pry the center cap out.3. Turn the wheel wrench
counterclockwise to loosen the
wheel nuts. Do not remove
them yet.
If the vehicle has locking lug
nuts, the key is supplied in the
tool bag. Use the key along
with the wheel wrench to remove
the wheel nuts from the tire.
Now jack up the vehicle.A. Front Position - Lower
Control Arm
B. Rear Position - Lower Axle
4. Locate the vehicle’s jacking
positions (A and B).
Jacking Locations (Overall View)
5-72 Service and Appearance Care

5. Assemble the jack and tools as
follows:
Front Tire Flat:If the at tire is
on a front tire of the vehicle,
use the jack handle and both jack
handle extensions. Attach the
wheel wrench to the jack handle
extensions. Attach the jack
handle to the jack. From the front
of the vehicle position the jack
on the front lower control armalong the bar that runs front to
back. 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
clear the ground.
Refer to the graphic above to
locate the placement of the jack
if the at tire is on the rear of
the vehicle.Rear Tire Flat:Use the jack
handle and both jack handle
extensions. Attach the wheel
wrench to the jack extensions.
Attach the jack handle to
the jack. From the rear of the
vehicle align the jack under the
rear axle. 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 clear the ground. Front Position
Rear Positions
Service and Appearance Care 5-73

6. Turn the wheel wrench clockwise
to raise the jack head to the
lifting point.
{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.7. Remove all the wheel nuts and
take off the at tire.
{CAUTION
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any
rust or dirt from places where the
wheel attaches to the vehicle.
In an emergency, use a cloth or a
paper towel to do this; but be sure
to use a scraper or wire brush
later, if needed, to get all the rust
or dirt off. SeeChanging a Flat
Tire on page 5-66.8. Remove any rust or dirt from the
wheel bolts, mounting surfaces
and spare wheel.{CAUTION
Never use oil or grease on bolts
or nuts because the nuts might
come loose. The vehicle’s wheel
could fall off, causing a crash.
9. Put the spare tire on the
mounting surface.
10. Put the wheel nuts back on
with the rounded end of the
nuts toward the wheel
after mounting the spare.
5-74 Service and Appearance Care

11. Tighten each wheel nut by
hand. Then use the wheel
wrench to tighten the nuts
until the wheel is held
against the hub.
12. Turn the wheel wrench
counterclockwise to lower
the vehicle. Lower the jack
completely.
{CAUTION
Incorrect or improperly tightened
wheel nuts can cause the wheel
to come loose and even come off.
This could lead to a crash. If you
have to replace them, be sure to
get new original equipment wheel
nuts. Stop somewhere as soon
as you can and have the nuts
(Continued)
CAUTION (Continued)
tightened with a torque wrench to
the proper torque specication.
SeeCapacities and Specifications
on page 5-96for wheel nut torque
specication.
Notice:Improperly tightened
wheel nuts can lead to brake
pulsation and rotor damage.
To avoid expensive brake repairs,
evenly tighten the wheel nuts
in the proper sequence and to
the proper torque specication.
SeeCapacities and Specifications
on page 5-96for the wheel nut
torque specication.13. Tighten the nuts rmly in a
crisscross sequence as
shown by turning the wheel
wrench clockwise.
14. After installing the wheel and
tire, reinstall the center cap.
Place the cap on the wheel and
tap it into place until it sits
ush with the wheel.
Service and Appearance Care 5-75

Secondary Latch
System (H3T)
This vehicle has an underbody
mounted tire hoist assembly that has
a secondary latch system. It is
designed to stop the spare tire from
suddenly falling off the vehicle if
the cable holding the spare tire is
damaged. For the secondary latch to
work, the tire must be stowed with
the valve stem pointing down.
SeeStoring a Flat or Spare Tire
and Tools (H3) on page 5-78
orStoring a Flat or Spare Tire and
Tools (H3T) on page 5-80for
instructions on storing the spare tire
correctly.
{CAUTION
Before beginning this procedure
read all the instructions. Failure to
read and follow the instructions
could damage the hoist assembly
and you and others could get
hurt. Read and follow the
instructions listed next.
To release the spare tire from the
secondary latch:
{CAUTION
Someone standing too close
during the procedure could be
injured by the jack. If the spare
tire does not slide off the jack
completely, make sure no one is
behind you or on either side of
you as you pull the jack out from
the under spare.1. If the cable is not visible, start
this procedure at Step 3.
2. Turn the lug wrench
counterclockwise until
approximately 6 inches (15 cm)
of cable is exposed.
3. Attach the lug wrench to the
jack and raise the jack at
least 10 turns.
4. Place the jack under the vehicle,
ahead of the rear bumper.
Position the center lift point of
the jack under the center of
the spare tire.
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5. Turn the lug wrench clockwise to
raise the jack until it lifts the
secondary latch spring.
6. Keep raising the jack until the
spare tire stops moving upward
and is held rmly in place.
This lets you know that the
secondary latch has released
and the spare tire is balancing on
the jack.
7. Lower the jack by turning the
lug wrench counterclockwise.
Keep lowering the jack until the
spare tire slides off the jack.8. Disconnect the lug wrench from
the jack and carefully remove
the jack. Use one hand to push
against the spare tire while
rmly pulling the jack out from
under the spare tire with the
other hand.9. Tilt the retainer and slip it
through the wheel opening when
the spare tire has been
completely lowered.
10. Turn the lug wrench clockwise
to raise the cable back up if the
cable is hanging.
Have the hoist shaft assembly
inspected as soon as you can.
You will not be able to store a spare
tire using the hoist assembly until
it has been repaired or replaced.
Service and Appearance Care 5-77

Storing a Flat or Spare
Tire and Tools (H3)
{CAUTION
Storing a jack, a tire, or other
equipment in the passenger
compartment of the vehicle could
cause injury. In a sudden stop or
collision, loose equipment could
strike someone. Store all these in
the proper place.To store the at or spare tire on the
spare tire mount:
1. Slide the at or spare tire onto
the swing-gate.
You may need assistance
to do this.
2. Reinstall the nuts to retain the
at or spare tire.
3. Tighten the nuts by hand.
{CAUTION
Incorrect or improperly tightened
wheel nuts can cause the wheel
to come loose and even come off.
This could lead to a crash. If you
have to replace them, be sure to
get new original equipment wheel
nuts. Stop somewhere as soon as
you can and have the nuts
tightened with a torque wrench to
the proper torque specication.
SeeCapacities and Specifications
on page 5-96for wheel nut torque
specication.
5-78 Service and Appearance Care

4. Use the wheel wrench to tighten
the nuts rmly. Try to move the
tire back and forth slightly to
be sure it is secure.
5. Reinstall the center tire cover
onto the spare or at tire.
6. If the vehicle has a spare tire
cover close the cover and
latch the side latch.To store the jack tool bag and jack:
1. Return the tools to the jack
tool bag.
2. Secure the tool bag to the jack
by securely wrapping the straps
around the jack. Then, slide
the straps through the rings on
the bag and secure.
3. Position the jack and jack tool
bag in the swing-gate.
When reinstalling the jack and
jack tool bag, make sure the jack
base is securely seated behind
the tabs in the swing-gate.4. Reinstall the wing nut retainer to
fasten the jack and tool bag in
the storage compartment.
Make sure that the wing nut
passes through the tool bag and
the jack before tightening it.
5. Turn the wing nut retainer
clockwise to secure.
6. Reinstall the compartment cover
by inserting the locator tabs in
the holes in the swing-gate.
Push the latches down to secure.
Service and Appearance Care 5-79