2008 HUMMER H2 brake light

Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this could
affect the way your vehicle performs, including its
braking, ride and handling characteristics, stability, and
resistance to rollover. Additionally, if your vehicle
has electronic systems such as anti-lock brakes, rollover
airbags, traction control, and electronic stability control,
the performance of these systems can be affected.
{CAUTION:
If you add different sized wheels, your vehicle
may not provide an acceptable level of
performance and safety if tires not
recommended for those wheels are selected.
You may increase the chance that you will
crash and suffer serious injury. Only use GM
specic wheel and tire systems developed for
your vehicle, and have them properly installed
by a GM certied technician.
SeeBuying New Tires on page 5-70andAccessories
and Modifications on page 5-3for additional information.
Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use
spare tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements and additional
General Motors Tire Performance Criteria (TPC)
standards.
5-72

Fuses Usage
39 Instrument Panel Cluster
40 Run, Accessory
41 Auxiliary Climate Control (Ignition)
42 Rear Defogger
43 SEO B1 Uptter Usage (Battery)
44 Cigarette Lighter, Auxiliary Power Outlet
45 Special Equipment Option (SEO)
46 Climate Controls (Ignition)
47 Engine Control Module (Ignition)
50 Cooling Fan 1 (J-Case)
51Electronically Controlled Air Suspension
(J-Case)
52Vehicle Stability System, Antilock Brake
System-1 (J-Case)
53 Cooling Fan 2 (J-Case)
54 Starter (J-Case)
55 Stud 2 Trailer Brake Module (J-Case)
56 Left Bussed Electrical Center 1 (J-Case)
57Heated Windshield Washer System
(J-Case)Fuses Usage
58 Four-Wheel Drive System (J-Case)
59Stud 1 Trailer Connector Battery Power
(J-Case)
60 Mid Bussed Electrical Center 1 (J-Case)
61 Climate Control Blower (J-Case)
62 Left Bussed Electrical Center 2 (J-Case)
Relays Usage
FAN HI Cooling Fan High Speed
FAN LO Cooling Fan Low Speed
FAN CNTRL Cooling Fan Control
HDLP LO Low-Beam Headlamp
A/C CMPRSR Air Conditioning Compressor
STRTR Starter
PWR/TRN Powertrain
PRK LAMP Parking Lamps
REAR DEFOG Rear Defogger
RUN/CRNK Switched Power
5-116

Maintenance Footnotes
#Lubricate the front suspension, steering linkage, and
parking brake cable guides. Control arm ball joints
require lubrication but 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, chafing, 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, chafing, 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,
fittings, and clamps; replace with genuine 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)Inspect wiper blades for wear, cracking, or
contamination. Clean the windshield and wiper blades, if
contaminated. Replace wiper blades that are worn or
damaged. See Windshield Wiper Blade Replacement on
page 5-54andWindshield, Backglass, and Wiper
Blades on page 5-105 for more information.
(e)Make sure the safety belt reminder light and safety
belt assemblies 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 see Checking
the Restraint Systems on page 1-76.
(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.
6-7

A
Accessories and Modications............................ 5-3
Adding Equipment to Your
Airbag-Equipped Vehicle...............................1-75
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-110
Air Cleaner/Filter, Engine.................................5-18
Air Conditioning..............................................3-22
Airbag
Off Light.....................................................3-35
Readiness Light..........................................3-34
Airbag System................................................1-64
What Will You See After an Airbag Inates?....1-70
When Should an Airbag Inate?....................1-69
Where Are the Airbags?...............................1-66
Airbag Systems
Adding Equipment to Your
Airbag-Equipped Vehicle............................1-75
Airbag Off Switch........................................1-72
How Does an Airbag Restrain?......................1-70
Servicing Your Airbag-Equipped Vehicle..........1-75
What Makes an Airbag Inate?......................1-70
Analog Clock..................................................3-21
Antenna, Fixed Mast......................................3-118
Antenna, XM™ Satellite Radio Antenna
System.....................................................3-118
Antilock Brake System (ABS)............................. 4-4
Antilock Brake, System Warning Light................3-39Appearance Care
Aluminum Wheels......................................5-106
Care of Safety Belts...................................5-103
Chemical Paint Spotting..............................5-107
Cleaning Exterior Lamps/Lenses..................5-104
Fabric/Carpet............................................5-101
Finish Care...............................................5-104
Finish Damage..........................................5-107
Instrument Panel, Vinyl, and Other
Plastic Surfaces.....................................5-102
Interior Cleaning........................................5-100
Leather....................................................5-102
Sheet Metal Damage
..................................5-106
Speaker Covers.........................................5-103
Tires........................................................5-106
Underbody Maintenance.............................5-107
Vehicle Care/Appearance Materials...............5-108
Washing Your Vehicle.................................5-103
Weatherstrips............................................5-103
Windshield, Backglass, and Wiper Blades......5-105
Wood Panels............................................5-103
Appointments, Scheduling Service....................... 7-8
Ashtray.........................................................3-21
Assist Steps...................................................4-32
Audio System.................................................3-72
Audio Steering Wheel Controls....................3-116
Fixed Mast Antenna...................................3-118
Navigation/Radio System,
see Navigation Manual............................3-104
1

Audio System (cont.)
Radio Reception........................................3-117
Rear Seat Audio (RSA)...............................3-114
Setting the Clock.........................................3-73
Theft-Deterrent Feature...............................3-116
XM™ Satellite Radio Antenna System...........3-118
Audio System(s).............................................3-75
Automatic Headlamp System............................3-18
Automatic Transmission
Fluid..........................................................5-21
Operation...................................................2-32
B
Battery..........................................................5-39
Run-Down Protection...................................3-19
Brake
Emergencies................................................ 4-5
Brakes..........................................................5-36
System Warning Light..................................3-38
Braking........................................................... 4-3
Braking in Emergencies..................................... 4-5
Break-In, New Vehicle.....................................2-28
Bulb Replacement...........................................5-48
Daytime Running Lamps...............................5-50
Front Turn Signal and Parking Lamps.............5-49
Halogen Bulbs............................................5-48
Headlamps.................................................5-48Bulb Replacement (cont.)
Replacement Bulbs......................................5-53
Roof Marker Lamps.....................................5-50
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-51
Buying New Tires...........................................5-70
C
Calibration.....................................................2-45
California Fuel.................................................. 5-5
California Perchlorate Materials Requirements....... 5-4
California Proposition 65 Warning....................... 5-3
Canadian Owners................................................ ii
Capacities and Specications..........................5-117
Carbon Monoxide...........2-14, 2-16, 2-43, 4-36, 4-55
Care of
Safety Belts..............................................5-103
Cargo Area, All-Weather..................................2-66
Cargo Tie Downs............................................2-65
CD, MP3 ...............................................3-94, 3-98
Center Console Storage Area...........................2-64
Chains, Tire...................................................5-75
Charging System Light....................................3-37
Check
Engine Light...............................................3-42
Checking Things Under the Hood....................... 5-9
Chemical Paint Spotting.................................5-107
2

I
Ignition Positions.............................................2-28
Infants and Young Children, Restraints...............1-39
Ination - Tire Pressure...................................5-61
Instrument Panel
Overview..................................................... 3-4
Instrument Panel (I/P)
Brightness..................................................3-18
Cluster.......................................................3-32
J
Jump Starting.................................................5-40
K
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Labeling, Tire Sidewall.....................................5-56
Lamps
Dome........................................................3-19
Dome Lamp Override...................................3-19
Reading.....................................................3-19
Lap-Shoulder Belt...........................................1-30LATCH System
Child Restraints...........................................1-47
Liftgate
Carbon Monoxide........................................2-13
Light
Airbag Off..................................................3-35
Airbag Readiness........................................3-34
Antilock Brake System Warning.....................3-39
Brake System Warning.................................3-38
Charging System.........................................3-37
Cruise Control.............................................3-46
Highbeam On.............................................3-47
Low Fuel Warning.......................................3-48
Malfunction Indicator....................................3-42
Oil Pressure...............................................3-46
Safety Belt Reminders..................................3-33
Security.....................................................3-46
StabiliTrak
®Indicator....................................3-40
Tire Pressure..............................................3-41
Tow/Haul Mode...........................................3-47
Lighting
Entry/Exit...................................................3-19
Lights
Exterior Lamps............................................3-15
Flash-to-Pass............................................... 3-9
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-17
Loading Your Vehicle.......................................4-44
Locking Rear Axle............................................ 4-6
7

O
Odometer......................................................3-33
Odometer, Trip...............................................3-33
Off-Road Driving.............................................4-13
Off-Road Recovery..........................................4-11
Oil
Engine.......................................................5-13
Pressure Gage............................................3-45
Pressure Light.............................................3-46
Oil, Engine Oil Life System..............................5-16
Older Children, Restraints................................1-36
Online Owner Center........................................ 7-4
OnStar, Privacy..............................................7-17
OnStar
®System, see OnStar®Manual...............2-53
Operation, Universal Home Remote System........2-57
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-29
Outlets
Accessory Power.........................................3-20
Outside
Automatic Dimming Mirror.............................2-49
Convex Mirror.............................................2-49
Heated Mirrors............................................2-49
Power Foldaway Mirrors...............................2-48
Overheated Engine Protection Operating Mode....5-28
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Paint, Damage..............................................5-107
Park Aid........................................................2-50
Park Brake....................................................2-40
Park (P)
Shifting Into................................................2-41
Shifting Out of............................................2-42
Parking
Over Things That Burn.................................2-43
Passing.........................................................4-12
PASS-Key
®III+..............................................2-26
PASS-Key®III+ Operation................................2-26
Perchlorate Materials Requirements, California...... 5-4
Power
Door Locks.................................................2-11
Electrical System.......................................5-110
Lumbar Controls........................................... 1-3
Reclining Seatbacks...................................... 1-5
Retained Accessory (RAP)............................2-29
Seat............................................................ 1-2
Steering Fluid.............................................5-34
Windows....................................................2-20
Power Winch Platform.....................................4-43
Privacy..........................................................7-16
Event Data Recorders..................................7-16
Navigation System.......................................7-17
OnStar.......................................................7-17
Radio Frequency Identication.......................7-17
Programmable Automatic Door Locks.................2-11
9