2004 HUMMER H2 light

Fuses Usage
IGN 1 PCM Ignition
PCM 1 Powertrain Control Module
ETC/ECMElectronic Throttle Control,
Electronic Brake Controller
INJ 1Ignition Coil, Fuel
Injectors-Bank 1
INJ 2Ignition Coil, Fuel
Injectors-Bank 2
IGN EInstrument Panel Cluster, Air
Conditioning Relay, Turn
Signal/Hazard Switch, Starter
Relay, Electronic Brake
Controller TC2 Mode Switch
RTDElectronic Brake Controller
Battery Feed
TRL B/U Backup Lamps Trailer Wiring
PCM BPowertrain Control Module,
Fuel Pump
F/PMP Fuel Pump (Relay)
02A Oxygen Sensors
B/U LPBack-up Lamps, Automatic
Transmission Shift Lock
Control SystemFuses Usage
RR DEFOG Rear Window Defogger
HDLP-HI Headlamp High Beam Relay
PRIME Not Used
O2B Oxygen Sensors
SIRSupplemental Inatable
Restraint System
FRT PARKFront Parking Lamps,
Sidemarker Lamps
DRLDaytime Running Lamps
(Relay)
SEO IGN Rear Defog Relay
TBC IGN1 Truck Body Controller Ignition
HI HDLP-LT High Beam Headlamp-Left
LH HID Not Used
DRL Daytime Running Lamps
IPC/DICInstrument Panel
Cluster/Driver Information
Center
HVAC/ECASClimate Control
Controller/Electronically
Controlled Air Suspension
CIG LTR Cigarette Lighter
5-109

Some maintenance services can be complex. So,
unless you are technically qualied and have the
necessary equipment, you should have your GM
Goodwrench dealer do these jobs.
When you go to your GM Goodwrench dealer for your
service needs, you will know that GM-trained and
supported service technicians will perform the work
using genuine GM parts.
If you want to get service information, seeService
Publications Ordering Information on page 7-11.
Owner Checks and Services on page 6-9tells you what
should be checked, when to check it and what you
can easily do to help keep your vehicle in good
condition.
The proper replacement parts, uids and lubricants to
use are listed inRecommended Fluids and Lubricants
on page 6-12andNormal Maintenance Replacement
Parts on page 6-14. When your vehicle is serviced,
make sure these are used. All parts should be replaced
and all necessary repairs done before you or anyone
else drives the vehicle. We recommend the use of
genuine GM parts.Scheduled Maintenance
When the CHANGE ENGINE OIL light in the Driver
Information Center (DIC) comes on, it means that service
is required for your vehicle. Have your vehicle serviced as
soon as possible within the next 600 miles (1 000 km). It
is possible that, if you are driving under the best
conditions, the engine oil life system may not indicate that
vehicle service is necessary for over a year. However,
your engine oil and lter must be changed at least once a
year and at this time the system must be reset. Your GM
Goodwrench dealer has GM-trained service technicians
who will perform this work using genuine GM parts and
reset the system.
If the engine oil life system is ever reset accidentally,
you must service your vehicle within 3,000 miles
(5 000 km) since your last service. Remember to reset
the oil life system whenever the oil is changed. See
Engine Oil on page 5-14for information on the Engine
Oil Life System and resetting the system.
6-4

When the CHANGE ENGINE OIL light appears, certain
services, checks and inspections are required.
Required services are described in the following for
“MaintenanceI” and “MaintenanceII.” Generally,
it is recommended that your rst service be
MaintenanceI, your second service be MaintenanceII
and that you alternate MaintenanceIand MaintenanceII
thereafter. However, in some cases, MaintenanceII
may be required more often.MaintenanceI— Use MaintenanceIif the CHANGE
ENGINE OIL light comes on within ten months since
vehicle was purchased or MaintenanceIIwas
performed.
MaintenanceII— Use MaintenanceIIif the previous
service performed was MaintenanceI. Always use
MaintenanceIIwhenever the light comes on ten months
or more since the last service or if the light has not
come on at all for one year.
Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. Reset oil life system. SeeEngine Oil on
page 5-14.An Emission Control Service.••
Lubricate chassis components.See footnote #.••
Visually check for any leaks or damage.See footnote (j).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine Air
Cleaner/Filter on page 5-19.An Emission Control Service. See footnote †.••
Rotate tires and check ination pressures and wear. SeeTires on page 5-60.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid as
needed.••
Perform any needed additional services. See “Additional Required Services” in
this section.••
6-5

Maintenance Footnotes
†The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to
the completion of the vehicle’s useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the
maintenance be recorded.
#Lubricate the front suspension, ball joints, steering
linkage, transmission shift linkage and parking
brake cable guides. Ball joints should not be lubricated
unless their temperature is 10°F (-12°C) or higher,
or they could be damaged.
(a)Visually inspect brake lines and hoses for proper
hook-up, binding, leaks, cracks, chang, etc. Inspect
disc brake pads for wear and rotors for surface
condition. Inspect other brake parts, including calipers,
parking brake, etc.
(b)Visually inspect front and rear suspension and
steering system for damaged, loose or missing parts,
signs of wear or lack of lubrication. Inspect power
steering lines and hoses for proper hook-up, binding,
leaks, cracks, chang, etc. Visually check constant
velocity joints, rubber boots and axle seals for leaks.(c)Visually inspect hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
ttings and clamps; replace with genuine GM parts as
needed. To help ensure proper operation, a pressure test
of the cooling system and pressure cap and cleaning the
outside of the radiator and air conditioning condenser is
recommended at least once a year.
(d)Visually inspect wiper blades for wear or cracking.
Replace blade inserts that appear worn or damaged
or that streak or miss areas of the windshield.
(e)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken air bag
coverings, and have them repaired or replaced. (The air
bag system does not need regular maintenance.)
(f)Lubricate all key lock cylinders, hood latch assembly,
secondary latch, pivots, spring anchor, release pawl,
rear compartment hinges, outer liftgate handle pivot
points, rear door detent link, roller mechanism, liftgate
handle pivot points, latch bolt, fuel door hinge, cargo
door hinge, locks and folding seat hardware. More
frequent lubrication may be required when exposed to a
corrosive environment. Applying silicone grease on
weatherstrips with a clean cloth will make them
last longer, seal better and not stick or squeak.
6-8

A
Accessory Inator...........................................5-76
Accessory Power Outlets.................................3-18
Adding Equipment to Your Air Bag-Equipped
Vehicle.......................................................1-73
Adding Washer Fluid.......................................5-37
Additional Program Information........................... 7-8
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-101
Add-On Equipment..........................................4-72
Adjusting the Speakers (Balance/Fade)......3-65, 3-77
After Off-Road Driving.....................................4-41
Air Bag
Off Light.....................................................3-30
Readiness Light..........................................3-28
Air Bag System..............................................1-61
Adding Equipment to Your Air Bag-Equipped
Vehicle...................................................1-73
Air Bag Off Switch.......................................1-68
How Does an Air Bag Restrain?....................1-65
Servicing Your Air Bag-Equipped Vehicle.........1-72
What Makes an Air Bag Inate?....................1-65
What Will You See After an Air Bag Inates?......1-66
When Should an Air Bag Inate?...................1-65
Where Are the Air Bags?..............................1-63
Air Cleaner/Filter, Engine.................................5-19
Air Conditioning..............................................3-23
Air Suspension...............................................4-74
Airbag Sensing and Diagnostic Module (SDM)...... 7-9All-Wheel Drive...............................................5-48
All-Wheel Drive (AWD) System.........................2-25
AM ...............................................................3-90
Antenna, Fixed Mast.......................................3-92
Anti-lock Brake System (ABS)............................ 4-7
Anti-Lock Brake, System Warning Light..............3-34
Appearance Care............................................5-92
Care of Safety Belts....................................5-95
Chemical Paint Spotting...............................5-99
Cleaning the Inside of Your Vehicle................5-93
Cleaning the Outside of Your Vehicle..............5-95
Finish Damage............................................5-99
Sheet Metal Damage...................................5-98
Underbody Maintenance...............................5-99
Vehicle Care/Appearance Materials...............5-100
Weatherstrips..............................................5-95
Approaching a Hill..........................................4-32
Ashtrays........................................................3-18
Audio System(s).............................................3-62
Audio Steering Wheel Controls......................3-89
Care of Your Cassette Tape Player................3-90
Care of Your CD Player...............................3-92
Care of Your CDs........................................3-92
Chime Level Adjustment...............................3-92
Fixed Mast Antenna.....................................3-92
Navigation/Radio System..............................3-86
Radio with Cassette and CD.........................3-63
Radio with Six-Disc CD................................3-74
Rear Seat Audio (RSA)................................3-87
Setting the Time..........................................3-62
1

Audio System(s) (cont.)
Theft-Deterrent Feature................................3-88
Understanding Radio Reception.....................3-90
Automatic Climate Control System.....................3-19
Automatic Dimming Mirror Operation..................2-35
Automatic Headlamp System............................3-14
Automatic Transmission
Fluid..........................................................5-21
Operation...................................................2-22
B
Backing Up....................................................4-82
Battery..........................................................5-42
BATTERY NOT CHARGING.............................3-57
Battery Replacement......................................... 2-5
Battery Run-Down Protection............................3-17
Before Leaving on a Long Trip.........................4-48
Before You Go Off-Roading..............................4-17
Bench Seat, Split (60/40)................................... 1-8
Brake
Parking......................................................2-29
System Warning Light..................................3-33
Brake Adjustment............................................5-42
Brake and Throttle Operation Techniques for
Off-Road Driving..........................................4-27
Brake Fluid....................................................5-38
Brake Pedal Travel.........................................5-42Brake Wear...................................................5-41
Brakes..........................................................5-38
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-9
Break-In, New Vehicle.....................................2-18
Bulb Replacement...........................................5-52
Center High-Mounted Stoplamp (CHMSL)........5-57
Daytime Running Lamps...............................5-54
Front Turn Signal and Parking Lamps.............5-53
Halogen Bulbs............................................5-52
Headlamps.................................................5-52
Replacement Bulbs......................................5-58
Roof Marker Lamps.....................................5-55
Sidemarker Lamps.......................................5-54
Taillamps....................................................5-57
Buying New Tires...........................................5-71
C
California Fuel.................................................. 5-6
Canada – Customer Assistance.......................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Specications..........................5-111
Carbon Monoxide...................4-52, 4-75, 2-13, 2-33
Care of
Safety Belts................................................5-95
Your Cassette Tape Player............................3-90
2

Care of (cont.)
Your CD Player...........................................3-92
Your CDs ...................................................3-92
Cargo Area Door Lock Switch............................ 2-8
Cargo Tie Downs............................................2-49
Cassette Tape Messages.................................3-71
CD Adapter Kits.............................................3-71
CD Messages........................................3-74, 3-86
Center Console Storage Area...........................2-46
Center High-Mounted Stoplamp (CHMSL)...........5-57
Center Instrument Panel Fuse Block................5-105
Center Overhead Console................................2-46
Center Roof Marker Lamps..............................5-56
Chains, Tire...................................................5-75
CHANGE ENGINE OIL....................................3-56
Charging System Light....................................3-32
Check Engine Light.........................................3-38
CHECK OIL LEVEL.........................................3-56
CHECK WASHER FLUID.................................3-59
Checking Brake Fluid......................................5-39
Checking Coolant............................................5-26
Checking Engine Oil........................................5-14
Checking Things Under the Hood......................5-10
Checking Your Restraint Systems......................1-73
Chemical Paint Spotting...................................5-99
Child Restraints
Child Restraint Systems...............................1-44
Infants and Young Children...........................1-40
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-50Child Restraints (cont.)
Older Children.............................................1-38
Securing a Child Restraint Designed for the
LATCH System........................................1-52
Securing a Child Restraint in a Rear Seat
Position..................................................1-53
Securing a Child Restraint in the Right Front
Seat Position...........................................1-55
Top Strap...................................................1-48
Top Strap Anchor Location............................1-49
Where to Put the Restraint...........................1-47
Chime Level Adjustment..................................3-92
Cigarette Lighter.............................................3-18
Cleaning
Inside of Your Vehicle..................................5-93
Outside of Your Vehicle................................5-95
Underbody Maintenance...............................5-99
Weatherstrips..............................................5-95
Cleaning Aluminum or Chrome-Plated Wheels.....5-98
Cleaning Exterior Lamps/Lenses.......................5-96
Cleaning Fabric/Carpet....................................5-93
Cleaning Glass Surfaces..................................5-94
Cleaning Interior Plastic Components.................5-94
Cleaning Leather............................................5-93
Cleaning the Mirror.........................................2-37
Cleaning the Speaker Covers...........................5-94
Cleaning the Top of the Instrument Panel...........5-94
Cleaning the Video Screen...............................3-92
3

Cleaning the Windshield, Backglass and Wiper
Blades.......................................................5-97
Cleaning Tires................................................5-98
Cleaning Vinyl................................................5-93
Cleaning Wood Panels....................................5-94
Climate Control System
Automatic...................................................3-19
Climate Controls Personalization....................3-25
Outlet Adjustment........................................3-25
Compass Calibration.......................................2-35
Compass Operation.........................................2-35
Compass Variance..........................................2-36
Content Theft-Deferrent....................................2-16
Control of a Vehicle.......................................... 4-6
Coolant
Engine Temperature Gage............................3-35
Heater, Engine............................................2-21
Surge Tank Pressure Cap.............................5-27
Cooling System..............................................5-30
Corner Roof Marker Lamps..............................5-55
Crossing Obstacles.........................................4-30
Cruise Control.................................................. 3-9
Cruise Control Light........................................3-42
Current and Past Model Order Forms................7-12
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-4
Customer Assistance Offices........................... 7-4Customer Assistance Information (cont.)
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-5
Reporting Safety Defects to General Motors....7-10
Reporting Safety Defects to the Canadian
Government............................................7-10
Reporting Safety Defects to the United States
Government............................................7-10
Roadside Assistance Program......................... 7-5
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-24
Delayed Locking............................................... 2-9
Dinghy Towing................................................4-66
Doing Your Own Service Work........................... 5-4
Dolly Towing..................................................4-66
Dome Lamps.................................................3-17
Door
Delayed Locking........................................... 2-9
Locks.......................................................... 2-7
Power Door Locks......................................... 2-8
Programmable Automatic Door Locks............... 2-9
Rear Door Security Locks.............................2-11
4