service indicator HUMMER H3 2007 Owners Manual

Your vehicle has a feature that may automatically
unlock the doors, turn the interior lamps on, and
ash the hazard warning ashers when the airbags
inate. You can lock the doors again, turn the
interior lamps off, and turn off the hazard warning
ashers by using the controls for those features.
In many crashes severe enough to inate the
airbag, windshields are broken by vehicle
deformation. Additional windshield breakage may
also occur from the right front passenger airbag.
Airbags are designed to inate only once.
After an airbag inates, you will need some new
parts for your airbag system. If you do not get
them, the airbag system will not be there to help
protect you in another crash. A new system
will include airbag modules and possibly other
parts. The service manual for your vehicle
covers the need to replace other parts.
Your vehicle has a crash sensing and
diagnostic module which records information
after a crash. SeeVehicle Data Collection
and Event Data Recorders on page 458.
Let only qualied technicians work on the
airbag system. Improper service can mean
that an airbag system will not work properly.
See your dealer for service.
Passenger Sensing System
Your vehicle has a passenger sensing system for
the right front passenger’s position. A passenger
airbag status indicator on the instrument panel
will be visible when you turn your ignition key
to ON or START.
The words ON and OFF or the symbol for on
and off, will be visible on the instrument panel
during the system check. When the system check
is complete, either the word ON or the word
OFF, or the symbol for on or the symbol for off
will be visible. SeePassenger Airbag Status
Indicator on page 179.
United StatesCanada
75

Notice:Using a tool to force the key from the
ignition switch could cause damage or break
the key. Use the correct key and turn the key
only with your hand. Make sure the key is all the
way in. If it is, turn the steering wheel left and
right while you turn the key hard. If none of this
works, then your vehicle needs service.
ACC (ACCESSORY) (B):This is the position in
which you can operate your electrical accessories
or items plugged into the accessory power
outlets. On automatic transmission vehicles, this
position unlocks the ignition. On manual
transmission vehicles, it unlocks the ignition and
steering wheel. Use this position if your vehicle
must be pushed or towed.
ON (C):This is the position that the switch returns
to after you start your engine and release the
switch. The switch stays in ON when the engine is
running. But even when the engine is not running,
you can use ON to operate the electrical
accessories and to display some instrument
panel cluster warning and indicator lights.The transmission is also unlocked in this position on
automatic transmission vehicles.
The battery could be drained if you leave the key in
the ACC or ON position with the engine off. You
may not be able to start your vehicle if the battery is
allowed to drain for an extended period of time.
START (D):This is the position that starts the
engine. When the engine starts, release the key.
The ignition switch returns to ON for driving.
When the engine is not running, ACC and ON
allows you to operate the electrical accessories,
such as the radio or items plugged into the
accessory power outlets.
A warning tone will sound if you open the driver’s
door when the ignition is in ACC or LOCK and
the key is in the ignition.
Key In the Ignition
Never leave your vehicle with the keys inside, as it
is an easy target for joy riders or thieves. If you
leave the key in the ignition and park your vehicle,
a chime will sound, when you open the driver’s
door. Always remember to remove your key from
the ignition and take it with you. This will lock
your ignition and transmission. Also, always
remember to lock the doors.
102

Notice:Operating your vehicle in
Four-Wheel-Low Lock above 30 mph (48 km/h)
for any extended period of time could cause
damage to the transfer case. Do not operate
your vehicle in Four-Wheel-Low Lock above
30 mph (48 km/h) for extended periods.
4
nQ(Four-Wheel-Low Lock):This mode
delivers extra torque to all four wheels and is used
for extreme off-road conditions. You might
choose 4-Wheel-Low Lock if you are driving in
off-road situations, such as, deep sand, mud, or
snow and climbing or descending steep hills.
If the vehicle has a locking rear axle, when in this
mode you can also choose to lock the rear
axle for additional traction in extreme off-road
situations. SeeLocking Rear Axle on page 243.
Indicator lights in the buttons show which
mode you are in. The indicator lights will come on
briey when you turn on the ignition the mode
the vehicle is in will stay on. If the lights do
not come on, you should take your vehicle to
your dealer for service. An indicator light
will ash while shifting the transfer case.It will remain lit when the shift is complete.
If for some reason the transfer case cannot
make a requested shift, it will return to the
last chosen setting.
If the SERV 4WD message on the Driver
Information Center (DIC) stays on, you should
take your vehicle to your dealer for service. See
Service 4WD message underDIC Warnings
and Messages on page 196.
Shifting between Four-Wheel High and
Four-Wheel-High Lock
With the vehicle traveling less than 45 mph
(72 km/h), press and release the Four-Wheel High
or Four-Wheel-High Lock button. The indicator
light will ash while shifting. It will remain lit when
the shift is complete.
It may be necessary to drive backwards while
turning for a distance of 25 feet (7.5 m) to get the
lock feature to disengage.
112

{CAUTION:
Even though the passenger sensing
system is designed to turn off the
passenger’s frontal airbag if the system
detects a rear-facing child restraint,
no system is fail-safe, and no one can
guarantee that an airbag will not deploy
under some unusual circumstance, even
though it is turned off. We recommend that
rear-facing child restraints be secured
in the rear seat, even if the airbag is off.
If the word OFF or the off symbol is lit on the airbag
status indicator, it means that the passenger
sensing system has turned off the right front
passenger’s frontal airbag. SeePassenger Sensing
System on page 75for more on this, including
important safety information.If, after several seconds, all status indicator lights
remain on, or if there are no lights at all, there
may be a problem with the lights or the passenger
sensing system. See your dealer for service.
{CAUTION:
If the off indicator and the airbag readiness
light ever come on together, it means that
something may be wrong with the airbag
system. If this ever happens, have the
vehicle serviced promptly, because an
adult-size person sitting in the right
front passenger seat may not have the
protection of the frontal airbag. See
Airbag Readiness Light on page 178.
180

Malfunction Indicator Lamp
Check Engine Light
Your vehicle has a
computer which
monitors operation
of the fuel, ignition,
and emission control
systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended
to assure that emissions are at acceptable
levels for the life of the vehicle, helping to produce
a cleaner environment. The check engine light
comes on to indicate that there is a problem and
service is required. Malfunctions often will be
indicated by the system before any problem is
apparent. This may prevent more serious damage
to your vehicle. This system is also designed to
assist your service technician in correctly
diagnosing any malfunction.Notice:If you keep driving your vehicle with
this light on, after awhile, your emission
controls may not work as well, your fuel
economy may not be as good, and your engine
may not run as smoothly. This could lead to
costly repairs that may not be covered by
your warranty.
Notice:Modications made to the engine,
transmission, exhaust, intake, or fuel system
of your vehicle or the replacement of the
original tires with other than those of the same
Tire Performance Criteria (TPC) can affect
your vehicle’s emission controls and may
cause this light to come on. Modications to
these systems could lead to costly repairs
not covered by your warranty. This may also
result in a failure to pass a required Emission
Inspection/Maintenance test. SeeAccessories
and Modifications on page 314.
186

The malfunction indicator lamp may turn on and
your vehicle may fail a smog-check test. See
Malfunction Indicator Lamp on page 186. If this
occurs, return to your authorized GM dealer for
diagnosis. If it is determined that the condition is
caused by the type of fuel used, repairs may not be
covered by your warranty.
Additives
To provide cleaner air, all gasolines in the United
States are now required to contain additives
that will help prevent engine and fuel system
deposits from forming, allowing your emission
control system to work properly. In most cases,
you should not have to add anything to your fuel.
However, some gasolines contain only the
minimum amount of additive required to meet U.S.
Environmental Protection Agency regulations.
To help keep fuel injectors and intake valves clean,
or if your vehicle experiences problems due to
dirty injectors or valves, look for gasoline that is
advertised as TOP TIER Detergent Gasoline. Also,
your dealer has additives that will help correct
and prevent most deposit-related problems.Gasolines containing oxygenates, such as ethers
and ethanol, and reformulated gasolines may
be available in your area. General Motors
recommends that you use these gasolines if they
comply with the specications described earlier.
However, E85 (85% ethanol) and other fuels
containing more than 10% ethanol must not be
used in vehicles that were not designed for
those fuels.
Notice:Your vehicle was not designed for
fuel that contains methanol. Do not use
fuel containing methanol. It can corrode metal
parts in your fuel system and also damage
the plastic and rubber parts. That damage
would not be covered under your warranty.
Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing
additive called methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the attendant where you
buy gasoline whether the fuel contains MMT.
General Motors recommends against the use of
such gasolines. Fuels containing MMT can reduce
the life of spark plugs and the performance of
the emission control system may be affected. The
malfunction indicator lamp may turn on. If this
occurs, return to your dealer for service.
317

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 the 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.
350

Light (cont.)
Security................................................... 190
StabiliTrak
®Not Ready............................. 184
Tire Pressure........................................... 185
Traction Off.............................................. 184
Up-Shift................................................... 181
Lighting
Exit.......................................................... 168
Loading Your Vehicle................................... 289
Locking Rear Axle....................................... 243
Lockout Protection......................................... 94
Locks
Door.......................................................... 92
Lockout Protection..................................... 94
Power Door............................................... 93
Programmable Automatic Door Locks......... 94
Loss of Control........................................... 249
Luggage Carrier.......................................... 144
Lumbar
Power Controls............................................ 9
M
Maintenance Schedule
Additional Required Services.................... 432
At Each Fuel Fill...................................... 436
At Least Once a Month............................ 436
At Least Once a Year.............................. 437Maintenance Schedule (cont.)
Introduction.............................................. 426
Maintenance Footnotes............................ 433
Maintenance Record................................ 444
Maintenance Requirements...................... 426
Normal Maintenance Replacement Parts.... 442
Owner Checks and Services.................... 435
Recommended Fluids and Lubricants....... 440
Scheduled Maintenance........................... 429
Using....................................................... 427
Your Vehicle and the Environment............ 427
Malfunction Indicator Light........................... 186
Manual Seats.................................................. 8
Manual Transmission
Fluid........................................................ 332
Operation................................................. 109
Message
DIC Warnings and Messages................... 196
Mirrors
Automatic Dimming Rearview with
Compass and Temperature Display....... 125
Automatic Dimming Rearview
with OnStar
®, Compass and
Temperature Display............................. 122
Outside Convex Mirror............................. 128
Outside Power Mirrors............................. 128
474

MP3 ............................................................ 222
MyGMLink.com............................................ 451
N
Navigation/Radio System,
see Navigation Manual............................. 230
New Vehicle Break-In.................................. 101
Normal Maintenance Replacement Parts....... 442
O
Odometer.................................................... 176
Odometer, Trip............................................ 176
Off-Road Driving.......................................... 250
Off-Road Lamps.......................................... 166
Off-Road Recovery...................................... 247
Oil
Engine..................................................... 323
Pressure Light.......................................... 189
Oil, Engine Oil Life System......................... 326
Older Children, Restraints............................. 39
Online Owner Center................................... 451
OnStar
®System, see OnStar®Manual........ 129
Other Warning Devices................................ 154
Outlet Adjustment........................................ 173
Outlet(s), Accessory Power.......................... 169Outside
Convex Mirror.......................................... 128
Power Mirrors.......................................... 128
Owner Checks and Services....................... 435
Owners, Canadian.......................................... 3
P
Paint, Damage............................................ 413
Park (P)
Shifting Into............................................. 117
Shifting Out of......................................... 119
Parking
Brake....................................................... 116
Over Things That Burn............................ 119
Parking Your Vehicle................................... 119
Passenger Airbag Status Indicator............... 179
Passenger Sensing System........................... 75
Passing....................................................... 247
Passlock
®.................................................... 100
Power
Accessory Outlet(s).................................. 169
Door Locks................................................ 93
Electrical System..................................... 417
Lumbar Controls.......................................... 9
Retained Accessory (RAP)....................... 103
Seat............................................................ 9
475

V
Vehicle
Control..................................................... 238
Damage Warnings....................................... 5
Loading.................................................... 289
Parking Your............................................ 119
Symbols...................................................... 5
Vehicle Data Collection and Event
Data Recorders........................................ 458
Vehicle Identication
Number (VIN).......................................... 415
Service Parts Identication Label.............. 416
Ventilation Adjustment.................................. 173
Visors........................................................... 97
W
Warning Lights, Gages and Indicators......... 174
Warnings
DIC Warnings and Messages................... 196
Hazard Warning Flashers......................... 154
Other Warning Devices............................ 154
Safety and Symbols..................................... 4
Vehicle Damage.......................................... 5Wheels
Alignment and Tire Balance..................... 387
Different Size........................................... 385
Replacement............................................ 387
Where to Put the Restraint............................ 49
Windows....................................................... 96
Power........................................................ 97
Windshield
Backglass, and Wiper Blades,
Cleaning............................................... 411
Washer.................................................... 158
Washer Fluid........................................... 346
Wiper Blade Replacement........................ 365
Wiper Fuses............................................ 417
Wipers..................................................... 157
Windshield, Rear Washer/Wiper................... 159
Winter Driving............................................. 281X
XM Radio Messages................................... 228
XM™ Satellite Radio Antenna System......... 232
Y
Your Vehicle and the Environment............... 427
480