2005 HUMMER H2 warning light

To use this feature, ensure that the following conditions
are met:
The engine must be running.
All doors must be fully closed. The suspension will
not raise or lower if a door is open.
The vehicle speed must be less than 40 mph
(64 km/h). The system will not activate otherwise.
Press the height control button to raise the rear of
the vehicle.
A light in the button will begin to ash as the rear of the
vehicle rises. Once the extended height has been
reached (this may take up to a minute), the warning
light will stop ashing and will stay lit while the vehicle is
at the extended height.
To lower the vehicle to the normal ride height, press the
button again. The light in the button will ash as the
suspension lowers. When the light in the button stops
ashing and goes out, the suspension has reached
the normal ride height.
This feature will lower the vehicle to the normal height if
vehicle speed exceeds 40 mph (64 km/h).You may also want to use this feature when ascending,
descending or cresting a steep hill as this can help
prevent the rear bumper from dragging on the base of
the hill or prevent the vehicle from grounding out
(high centering) on the crest of the hill.
Do not use this feature when towing a trailer.
Electronically Controlled Air
Suspension System
The electronically controlled air suspension, if equipped,
keeps the rear of your vehicle level as you load and
unload it. The system includes a compressor, two height
sensor and two air springs supporting the vehicle.
The engine must be running for the system to level the
vehicle after loading or unloading. The system will
suspend leveling if any of the doors are open. Once the
doors are closed, system leveling will continue.
You may hear the compressor running when you load
your vehicle, and periodically as the system adjusts
the vehicle to the standard ride height. You may
also hear the release of air similar to a hissing sound
during suspension operation. This is normal.
Load leveling will not function normally with the inator
hose attached to the inator outlet. Remove the
inater hose from the outlet when it is not in use. See
Accessory Inator on page 5-67.
4-66

Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs rst, if you add
only DEX-COOL
®extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating on
page 5-26.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
What to Use
Use a mixture of one-halfclean, drinkable waterand
one-half DEX-COOL®coolant which will not damage
aluminum parts. If you use this coolant mixture, you do
not need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.
Notice:If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost would not be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core and
other parts.
5-24

Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that make
a high-pitched warning sound when the brake pads
are worn and new pads are needed. The sound
may come and go or be heard all the time your vehicle
is moving, except when you are pushing on the
brake pedal rmly.
{CAUTION:
The brake wear warning sound means that
soon your brakes will not work well. That
could lead to an accident. When you hear
the brake wear warning sound, have your
vehicle serviced.
Notice:Continuing to drive with worn-out brake
pads could result in costly brake repair.Some driving conditions or climates may cause a brake
squeal when the brakes are rst applied or lightly
applied. This does not mean something is wrong with
your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts in
the proper sequence to GM torque specications.
Brake linings should always be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return to
normal height, or if there is a rapid increase in
pedal travel. This could be a sign of brake trouble.
Brake Adjustment
Every time you make a brake stop, your disc brakes
adjust for wear.
5-37

A
Accessory Inator...........................................5-67
Accessory Power Outlets.................................3-18
Adding Equipment to Your Airbag-Equipped
Vehicle.......................................................1-69
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-102
Air Cleaner/Filter, Engine.................................5-18
Air Conditioning..............................................3-19
Air Suspension...............................................4-66
Airbag
Off Light.....................................................3-30
Readiness Light..........................................3-29
Airbag Sensing and Diagnostic Module (SDM)...... 7-9
Airbag System................................................1-58
Adding Equipment to Your Airbag-Equipped
Vehicle...................................................1-69
Airbag Off Switch........................................1-65
How Does an Airbag Restrain?......................1-63
Servicing Your Airbag-Equipped Vehicle..........1-68
What Makes an Airbag Inate?......................1-63
What Will You See After an Airbag Inates?....1-64
When Should an Airbag Inate?....................1-61
Where Are the Airbags?...............................1-60
All-Wheel Drive...............................................5-43
All-Wheel Drive (AWD) System.........................2-32
Antenna, Fixed Mast.......................................3-92
Anti-Lock Brake System (ABS)........................... 4-7
Anti-Lock Brake, System Warning Light..............3-34Appearance Care............................................5-92
Aluminum Wheels........................................5-98
Care of Safety Belts....................................5-95
Chemical Paint Spotting...............................5-99
Cleaning Exterior Lamps/Lenses....................5-97
Fabric/Carpet..............................................5-92
Finish Care.................................................5-97
Finish Damage............................................5-99
Glass Surfaces............................................5-95
Instrument Panel.........................................5-94
Interior Plastic Components...........................5-94
Leather......................................................5-94
Sheet Metal Damage...................................5-99
Speaker Covers..........................................5-95
Tires..........................................................5-99
Underbody Maintenance...............................5-99
Vehicle Care/Appearance Materials...............5-100
Vinyl..........................................................5-94
Washing Your Vehicle...................................5-96
Weatherstrips..............................................5-95
Windshield, Backglass, and Wiper Blades.......5-98
Wood Panels..............................................5-95
Ashtrays........................................................3-18
Audio System(s).............................................3-60
Audio Steering Wheel Controls......................3-89
Care of Your Cassette Tape Player................3-91
Care of Your CD Player...............................3-92
Care of Your CDs........................................3-92
Chime Level Adjustment...............................3-92
Fixed Mast Antenna.....................................3-92
1

Audio System(s) (cont.)
Navigation/Radio System..............................3-87
Radio with Cassette and CD.........................3-61
Radio with Six-Disc CD................................3-74
Rear Seat Audio (RSA)................................3-87
Setting the Time..........................................3-61
Theft-Deterrent Feature................................3-89
Understanding Radio Reception.....................3-90
Automatic Headlamp System............................3-15
Automatic Transmission
Fluid..........................................................5-21
Operation...................................................2-28
B
Battery..........................................................5-38
Run-Down Protection...................................3-17
Before Leaving on a Long Trip.........................4-45
Bench Seat, Split (60/40)................................... 1-7
Brake
Anti-Lock Brake System (ABS)........................ 4-7
Emergencies................................................ 4-8
Parking......................................................2-36
System Warning Light..................................3-32
Brakes..........................................................5-35
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-25Bulb Replacement...........................................5-45
Daytime Running Lamps...............................5-47
Front Turn Signal and Parking Lamps.............5-47
Halogen Bulbs............................................5-45
Headlamps.................................................5-46
Replacement Bulbs......................................5-52
Roof Marker Lamps.....................................5-48
Taillamps....................................................5-50
Buying New Tires...........................................5-63
C
California Fuel.................................................. 5-5
Canadian Owners................................................ ii
Capacities and Specications..........................5-112
Carbon Monoxide . . . 2-13, 2-14, 2-16, 2-39, 4-48, 4-68
Care of
Safety Belts................................................5-95
Your Cassette Tape Player............................3-91
Your CD Player...........................................3-92
Your CDs ...................................................3-92
Cargo Area, All-Weather..................................2-59
Cargo Tie Downs............................................2-59
Center Console Storage Area...........................2-55
Center Overhead Console................................2-54
Chains, Tire...................................................5-67
Charging System Light....................................3-31
2

Electronically Controlled Air Suspension System....4-66
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-38
Check and Service Engine Soon Light............3-37
Coolant......................................................5-24
Coolant Heater............................................2-27
Coolant Temperature Gage...........................3-35
Drive Belt Routing.......................................6-14
Engine Compartment Overview......................5-12
Exhaust.....................................................2-39
Oil .............................................................5-13
Overheated Protection Operating Mode...........5-28
Overheating................................................5-26
Starting......................................................2-26
Entry/Exit Lighting...........................................3-17
Event Data Recorders (EDR)............................. 7-9
Extender, Safety Belt.......................................1-35
Exterior Lamps...............................................3-13
F
Filter
Engine Air Cleaner......................................5-18
Finish Damage...............................................5-99
First Aid Kit....................................................4-55
Fixed Mast Antenna........................................3-92Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-69
Flat Tire, Changing.........................................5-70
Flat Tire, Storing.............................................5-86
Fluid
Automatic Transmission................................5-21
Power Steering...........................................5-33
Windshield Washer......................................5-34
Front Axle......................................................5-44
Front Mounted Receiver...................................4-56
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-42
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Low Warning Light.......................................3-43
Fuses
Center Instrument Panel Fuse Block.............5-106
Fuses and Circuit Breakers.........................5-103
Instrument Panel Fuse Block.......................5-103
Underhood Fuse Block...............................5-107
Windshield Wiper.......................................5-102
5

G
Gage
Engine Coolant Temperature.........................3-35
Fuel..........................................................3-42
Oil Pressure...............................................3-40
Speedometer..............................................3-28
Tachometer.................................................3-28
Transmission Temperature.............................3-35
Voltmeter Gage...........................................3-32
Garage Door Opener.......................................2-50
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-54
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamps....................................................5-46
Automatic Headlamp System.........................3-15
Bulb Replacement.......................................5-45
Daytime Running Lamps.......................3-14, 5-47
Flash-to-Pass............................................... 3-8
Front Turn Signal and Parking Lamps.............5-47Headlamps (cont.)
Halogen Bulbs............................................5-45
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-14
Roof Marker Lamps.....................................5-48
Heated Seats................................................... 1-4
Heater...........................................................3-19
Highbeam On Light.........................................3-41
Highway Hypnosis...........................................4-46
Hill and Mountain Roads..................................4-46
HomeLink
®Transmitter....................................2-50
HomeLink®Transmitter, Programming................2-51
Hood
Checking Things Under.................................. 5-9
Release.....................................................5-10
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-22
I
Ignition Positions.............................................2-25
Infants and Young Children, Restraints...............1-39
Ination -- Tire Pressure..................................5-60
Instrument Panel
Brightness..................................................3-16
Cluster.......................................................3-27
Overview..................................................... 3-4
6

J
Jump Starting.................................................5-39
K
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Labelling, Tire Sidewall....................................5-55
Lamps
Battery Run-Down Protection.........................3-17
Dome........................................................3-17
Exterior......................................................3-13
Off-Road....................................................3-16
Reading.....................................................3-17
LATCH System
Child Restraints...........................................1-49
Securing a Child Restraint Designed for the
LATCH System........................................1-51
Liftgate..........................................................2-13
Light
Airbag Off..................................................3-30
Airbag Readiness........................................3-29
Anti-Lock Brake System Warning...................3-34Light (cont.)
Brake System Warning.................................3-32
Charging System.........................................3-31
Cruise Control.............................................3-41
Highbeam On.............................................3-41
Low Fuel Warning.......................................3-43
Malfunction Indicator....................................3-37
Safety Belt Reminder...................................3-28
Security.....................................................3-41
Tow/Haul Mode...........................................3-42
Traction Off................................................3-34
Lighting
Entry/Exit...................................................3-17
Locking Rear Axle...........................................4-10
Lockout Protection..........................................2-13
Locks
Delayed Locking........................................... 2-9
Door........................................................... 2-8
Lockout Protection.......................................2-13
Power Door.................................................. 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-12
Loss of Control...............................................4-15
Low Fuel Warning Light...................................3-43
Luggage Carrier..............................................2-55
Lumbar
Power Controls............................................. 1-3
7