HUMMER H2 2008 Owners Manual

If necessary, use non-abrasive cleaners that are marked
safe for painted surfaces to remove foreign matter.
Exterior painted surfaces are subject to aging, weather
and chemical fallout that can take their toll over a
period of years. You can help to keep the paint nish
looking new by keeping your vehicle garaged or covered
whenever possible.
Protecting Exterior Bright Metal Parts
Bright metal parts should be cleaned regularly to keep
their luster. Washing with water is all that is usually
needed. However, you may use chrome polish on
chrome or stainless steel trim, if necessary.
Use special care with aluminum trim. To avoid damaging
protective trim, never use auto or chrome polish,
steam or caustic soap to clean aluminum. A coating of
wax, rubbed to high polish, is recommended for all
bright metal parts.
Windshield, Backglass, and
Wiper Blades
Clean the outside of the windshield and backglass with
glass cleaner.
Clean the rubber blades using a lint free cloth or paper
towel soaked with windshield washer uid or a mild
detergent. Wash the windshield thoroughly when you
clean the blades. Bugs, road grime, sap and a buildup of
vehicle wash/wax treatments may cause wiper streaking.
Replace the wiper blades if they are worn or damaged.
Wipers can be damaged by:
Extreme dusty conditions
Sand and salt
Heat and sun
Snow and ice, without proper removal
5-105

Aluminum Wheels
Notice:If you use strong soaps, chemicals,
abrasive polishes, cleaners, brushes, or cleaners
that contain acid on aluminum or chrome-plated
wheels, you could damage the surface of the
wheel(s). The repairs would not be covered by your
warranty. Use only approved cleaners on aluminum
or chrome-plated wheels.
Keep the wheels clean using a soft clean cloth with mild
soap and water. Rinse with clean water. After rinsing
thoroughly, dry with a soft clean towel. A wax may then
be applied.
Notice:Using chrome polish on aluminum wheels
could damage the wheels. The repairs would not
be covered by your warranty. Use chrome polish on
chrome wheels only.
The surface of these wheels is similar to the painted
surface of the vehicle. Do not use strong soaps,
chemicals, abrasive polishes, abrasive cleaners,
cleaners with acid, or abrasive cleaning brushes on
them because the surface could be damaged.
Do not use chrome polish on aluminum wheels.Notice:If you drive your vehicle through an
automatic car wash that has silicone carbide tire
cleaning brushes, you could damage the aluminum
or chrome-plated wheels. The repairs would not
be covered by your warranty. Never drive a vehicle
equipped with aluminum or chrome-plated wheels
through an automatic car wash that uses silicone
carbide tire cleaning brushes.
Tires
To clean the tires, use a stiff brush with tire cleaner.
Notice:Using petroleum-based tire dressing
products on your vehicle may damage the paint
nish and/or tires. When applying a tire dressing,
always wipe off any overspray from all painted
surfaces on your vehicle.
Sheet Metal Damage
If the vehicle is damaged and requires sheet metal
repair or replacement, make sure the body repair shop
applies anti-corrosion material to parts repaired or
replaced to restore corrosion protection.
Original manufacturer replacement parts will provide the
corrosion protection while maintaining the warranty.
5-106

Finish Damage
Any stone chips, fractures or deep scratches in the nish
should be repaired right away. Bare metal will corrode
quickly and may develop into major repair expense.
Minor chips and scratches can be repaired with
touch-up materials available from your dealer/retailer.
Larger areas of nish damage can be corrected in
your dealer’s/retailer’s body and paint shop.
Underbody Maintenance
Chemicals used for ice and snow removal and dust
control can collect on the underbody. If these are not
removed, corrosion and rust can develop on the
underbody parts such as fuel lines, frame, oor pan, and
exhaust system even though they have corrosion
protection.
At least every spring, ush these materials from the
underbody with plain water. Clean any areas where mud
and debris can collect. Dirt packed in close areas of
the frame should be loosened before being ushed.
Your dealer/retailer or an underbody car washing system
can do this for you.
Chemical Paint Spotting
Some weather and atmospheric conditions can create a
chemical fallout. Airborne pollutants can fall upon and
attack painted surfaces on the vehicle. This damage
can take two forms: blotchy, ring-shaped discolorations,
and small, irregular dark spots etched into the paint
surface.
Although no defect in the paint job causes this, we will
repair, at no charge to the owner, the surfaces of
new vehicles damaged by this fallout condition within
12 months or 12,000 miles (20 000 km) of purchase,
whichever occurs rst.
5-107

Vehicle Care/Appearance Materials
Description Usage
Polishing ClothInterior and exterior
polishing cloth.
Tar and Road
Oil RemoverRemoves tar, road oil,
and asphalt.
Chrome Cleaner
and PolishUse on chrome or
stainless steel.
White Sidewall
Tire CleanerRemoves soil and black
marks from whitewalls
and raised white lettering.
Vinyl Cleaner Cleans vinyl.
Glass CleanerRemoves dirt, grime,
smoke and ngerprints.
Chrome Wheel CleanerRemoves dirt and grime
from chrome wheels.
Finish EnhancerRemoves dust,
ngerprints, and surface
contaminants. Spray on
and wipe off.
Description Usage
Swirl Remover PolishRemoves swirl marks, ne
scratches, and other light
surface contamination.
Cleaner WaxRemoves light scratches
and protects nish.
Foaming Tire Shine
Low GlossCleans, shines, and
protects tires. No wiping
necessary.
Wash Wax ConcentrateMedium foaming
shampoo. Cleans and
lightly waxes.
Biodegradable and
phosphate free.
Spot LifterQuickly removes spots
and stains from carpets,
vinyl, and cloth
upholstery.
Odor EliminatorOdorless spray odor
eliminator used on fabrics,
vinyl, leather and carpet.
5-108

Vehicle Identication
Vehicle Identication Number (VIN)
This is the legal identier for your vehicle. It appears on
a plate in the front corner of the instrument panel, on
the driver side. You can see it if you look through
the windshield from outside your vehicle. The VIN also
appears on the Certication/Tire and Service Parts
labels and the certicates of title and registration.
Engine Identication
The eighth character in the VIN is the engine code.
This code helps you identify your vehicle’s engine,
specications, and replacement parts. SeeCapacities
and Specifications on page 5-117for your vehicle’s
engine code.
Service Parts Identication Label
This label is on the inside of the glove box. It is very
helpful if you ever need to order parts. The label has the
following information:
Vehicle Identication Number (VIN)
Model designation
Paint information
Production options and special equipment
Do not remove this label from the vehicle.
5-109

Electrical System
Add-On Electrical Equipment
Notice:Do not add anything electrical to your
vehicle unless you check with your dealer/retailer
rst. Some electrical equipment can damage your
vehicle and the damage would not be covered by
your warranty. Some add-on electrical equipment can
keep other components from working as they should.
Add-on equipment can drain your vehicle’s battery,
even if your vehicle is not operating.
Your vehicle has an airbag system. Before attempting to
add anything electrical to your vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-75.
Windshield Wiper Fuses
The windshield wiper motor is protected by a circuit
breaker and a fuse. If the motor overheats due to heavy
snow, etc., the wiper will stop until the motor cools.
If the overload is caused by some electrical problem,
have it xed.
Power Windows and Other
Power Options
Circuit breakers in the fuse block protect the power
windows and other power accessories. When the current
load is too heavy, the circuit breaker opens and closes,
protecting the circuit until the problem is xed or
goes away.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and fusible thermal links. This greatly reduces the
chance of res caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical size
and rating.
If you ever have a problem on the road and don’t have
a spare fuse, you can borrow one that has the same
amperage. Just pick some feature of your vehicle
that you can get along without – like the radio or
cigarette lighter – and use its fuse, if it is the correct
amperage. Replace it as soon as you can.
5-110

Instrument Panel Fuse Block
The instrument panel fuse block access door is located
on the driver side edge of the instrument panel.
Fuses Usage
LT DRDriver Side Power Window Circuit
Breaker
REAR SEAT Rear Seats
AUX PWR2 Floor Console Power Outlets
SWC BKLT Steering Wheel Controls Backlight
DDM Driver Door Module
CTSYDome Lamps, Front Passenger Side
Turn Signal
LT STOP TRN Driver Side Turn Signal, Stoplamp
DIM Instrument Panel Back Lighting
RT STOP TRN Passenger Side Turn Signal
PDM Passenger Door Module
UNLCK2 Power Door Lock 2 (Unlock Feature)
LCK2 Power Door Lock 2 (Lock Feature)
STOP LAMPSStoplamps, Center-High Mounted
Stoplamp
REAR HVAC Rear Climate Controls
BCM Body Control Module
5-111

Fuses Usage
AUX PWRRear Cargo Accessory Power
Outlets
IS LPS Interior Lamps
UNLCK1 Power Door Lock 1 (Unlock Feature)
INFOInfotainment System, Remote
Keyless Entry System
UGDO Universal Home Remote System
LCK1 Power Door Lock 1 (Lock Feature)
ONSTAR OnStar
®
REAR WPR Rear Wiper
DSM Driver Seat Module
Harness
ConnectorUsage
LT DR Driver Door Harness Connection
BODY Harness Connector
BODY Harness Connector
Center Instrument Panel Fuse Block
The center instrument panel fuse block is located
underneath the instrument panel, to the left of the
steering column.
Top View
5-112

Harness
ConnectorUsage
BODY 2 Body Harness Connector 2
BODY 1 Body Harness Connector 1
BODY 3 Body Harness Connector 3
HEADLINER 3 Headliner Harness Connector 3
HEADLINER 2 Headliner Harness Connector 2
HEADLINER 1 Headliner Harness Connector 1
SEO/UPFITTERSpecial Equipment Option Uptter
Harness Connector
Circuit Breaker Usage
CB1Passenger Side Power Window
Circuit Breaker
CB2 Passenger Seat Circuit Breaker
CB3 Driver Seat Circuit Breaker
CB4 Rear Sliding Window
Underhood Fuse Block
The underhood fuse block in the engine compartment
is located on the driver side of the vehicle near the
battery. Lift the cover for access to the fuse/relay block.
Notice:Spilling liquid on any electrical components
on your vehicle may damage it. Always keep the
covers on any electrical component.
To remove fuses if you don’t have a fuse extractor,
hold the end of the fuse between your thumb and index
nger and pull straight out.
SeeEngine Compartment Overview on page 5-12for
more information on its location.
5-113

5-114