2010 HUMMER H3 tow

10-68 Vehicle Care
2. Insert the hoist end of theextension tool (I) through the
hoist shaft access ramp (H). 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. See Secondary
Latch System on page 10‑84.
5. Pull the spare tire towards you.6. Tilt the tire, with slack in the cable, to access the tire/wheel
retainer (B).

Vehicle Care 10-71
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.
6. Turn the wheel wrench clockwise to raise the jack head
to the lifting point.
{WARNING
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.
{WARNING
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 fit the jack lift
head into the proper location
before raising the vehicle.
7. Remove all the wheel nuts and take off the flat tire.
{WARNING
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. See If a Tire Goes Flat
on page 10‑64.
8. Remove any rust or dirt from the wheel bolts, mounting surfaces
and spare wheel.

10-72 Vehicle Care
{WARNING
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.
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.
{WARNING
Wheel nuts that are improperly or
incorrectly tightened can cause
the wheels to become loose or
come off. The wheel nuts should
be tightened with a torque wrench
to the proper torque specification
after replacing. Follow the torque
specification supplied by the
aftermarket manufacturer when
using accessory locking wheel
nuts. See Capacities and
Specifications
on page 12‑2for
original equipment wheel nut
torque specifications.
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 specification. See
Capacities and Specifications
on
page 12‑2for the wheel nut
torque specification.
13. Tighten the nuts firmly 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 flush
with the wheel.

10-80 Vehicle Care
7. Remove all the wheel nuts andtake off the flat tire.
{WARNING
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. See If a Tire Goes Flat
on page 10‑64. 8. Remove any rust or dirt from the
wheel bolts, mounting surfaces
and spare wheel.
{WARNING
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. 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.

10-84 Vehicle Care
Secondary Latch System
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.
SeeTire Changing (H3T)
on
page 10‑66or Tire Changing (H3)on page 10‑75for instructions on
storing the spare tire correctly.
{WARNING
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:
{WARNING
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
under the 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.

10-90 Vehicle Care
Towing
Towing the Vehicle
To avoid damage, the disabled
vehicle should be towed with all
four wheels off the ground. Consult
your dealer or a professional towing
service if the disabled vehicle must
be towed. SeeRoadside Service
on
page 13‑5.
To tow the vehicle behind
another vehicle for recreational
purposes —such as behind a
motorhome, see “Recreational
Vehicle Towing” following.
Recreational Vehicle
Towing
Recreational vehicle towing
means towing the vehicle behind
another vehicle–such as behind
a motorhome. The two most
common types of recreational
vehicle towing are known as “dinghy
towing” — towing the vehicle with
all four wheels on the ground, and “dolly towing” —
towing the vehicle
with two wheels on the ground and
two wheels up on a device known
as a “dolly”.
Here are some important things to
consider before recreational vehicle
towing:
.What is the towing capacity of
the tow vehicle? Be sure to read
the tow vehicle manufacturer's
recommendations.
.What is the distance that will be
travelled? Some vehicles have
restrictions on how far and how
long they can tow.
.Is the proper towing equipment
going to be used? See your
dealer or trailering professional
for additional advice and
equipment recommendations.
.Is the vehicle ready to be
towed? Just as preparing the
vehicle for a long trip, make sure
the vehicle is prepared to be
towed.
Dinghy Towing
This full‐time four‐wheel‐drive
vehicle can be dinghy towed from
the front. These vehicles can also
be towed by placing them on a
platform trailer with all four wheels
off the ground. These vehicles
cannot be towed using a dolly.

Vehicle Care 10-91
Use the following procedure to tow
the vehicle:
1. Put the transmission in P (Park)for an automatic transmission
or in 1 (First) for a manual
transmission.
2. Turn the engine off, but leave the ignition in ACC/
ACCESSORY.
3. Firmly set the parking brake.
4. Securely attach the vehicle being towed to the tow vehicle.
{WARNING
Shifting a full‐time four‐wheel‐
drive vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the automatic
transmission is in P (Park) or the
manual transmission is in any
gear. You or others could be
injured. Make sure the parking
brake is firmly set before the
transfer case is shifted to
N (Neutral). 5. Shift the transfer case to
N (Neutral). See Four-Wheel
Drive
on page 9‑46for the
proper procedure to select the
N (Neutral) position for the
vehicle.
6. Release the parking brake only after the vehicle being towed
is firmly attached to the tow
vehicle.
7. Make sure the ignition is in ACC/ACCESSORY.
When towing the vehicle for
extended periods of time, start the
vehicle as often as possible to
prevent battery drain. This should
only be done when the tow vehicle
is parked.
After towing, see “Shifting Out of
NEUTRAL” underFour-Wheel Drive
on page 9‑46.
Dolly Towing
Notice: Dolly towing the
vehicle will damage drivetrain
components. Do not dolly tow the
vehicle.
The vehicle cannot be dolly towed.
If the vehicle must be towed behind
another vehicle, use the dinghy
towing procedure explained
previously.

Vehicle Care 10-93
Washing the Vehicle
To preserve the vehicle's finish,
keep it clean by washing it often.
Do not wash the vehicle in direct
sunlight and use a car
washing soap.
Notice:Certain cleaners contain
chemicals that can damage the
emblems or nameplates on the
vehicle. Check the cleaning
product label. If it states that it
should not be used on plastic
parts, do not use it on the vehicle
or damage may occur and it
would not be covered by the
warranty.
Do not use cleaning agents that are
petroleum based or that contain
acid or abrasives, as they can
damage the paint, metal or plastic
on the vehicle. Approved cleaning
products can be obtained from your
dealer. Follow all manufacturer
directions regarding correct product
usage, necessary safety precautions and appropriate
disposal of any vehicle care
product.
Rinse the vehicle well, before
washing and after to remove all
cleaning agents completely. If they
are allowed to dry on the surface,
they could stain.
Dry the finish with a soft, clean
chamois or an all-cotton towel to
avoid surface scratches and water
spotting.
High pressure car washes could
cause water to enter the vehicle.
Avoid using high pressure washes
closer than 30 cm (12 inches) to the
surface of the vehicle. Use of power
washers exceeding 8,274 kPa
(1,200 psi) can result in damage or
removal of paint and decals.
Notice:
Conveyor systems on
some automatic car washes could
damage the vehicle. There may
not be enough clearance for the
undercarriage. Check with the car
wash manager before using the
automatic car wash.
Weatherstrips
Silicone grease on weatherstrips will
make them last longer, seal better,
and not stick or squeak. Apply
silicone grease with a clean cloth.
During very cold, damp weather
frequent application may be
required. See “Fluids and
Lubricants” in the Index of the
“Maintenance and Warranty and
Owner assistance Information”
manual.