brake light HUMMER H2 2006 Owners Manual

The transfer case is a part of the Full-Time Four-Wheel
Drive system and allows the following four different
modes of operation:
4
m(Full-Time Four-Wheel Drive):This setting is
used for driving in most street and highway situations.
You can also use this setting for light or variable
off-road conditions.
4
mQ(Four-Wheel-High Lock):Use this mode
when you need extra traction in most off-road situations
such as sand, mud, snow, or level, rocky trails.
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
Four-Wheel-Low Lock if you are driving off-road in deep
sand, mud, or snow and climbing or descending
steep hills.
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 4-10.Notice:Operating your vehicle in
Four-Wheel-Low Lock above 50 mph (80 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 50 mph (80 km/h) for
extended periods.
{CAUTION:
Shifting the transfer case to NEUTRAL can
cause your vehicle to roll even if the
transmission is in PARK (P). You or someone
else could be seriously injured. Be sure to set
the parking brake before placing the transfer
case in NEUTRAL. SeeParking Brake on
page 2-34.
N (NEUTRAL):Shift the vehicle’s transfer case to
NEUTRAL only when towing your vehicle. See
Recreational Vehicle Towing on page 4-60orTowing
Your Vehicle on page 4-59for more information.
2-31

Shifting Out of Four-Wheel Low Lock
To shift from Four-Wheel-Low Lock to Four-Wheel High
or Four-Wheel-High Lock, your vehicle must be stopped
or moving less than 3 mph (5 km/h) with the transmission
in NEUTRAL (N) and the ignition in RUN. The preferred
method for shifting out of Four-Wheel-Low Lock is to
have your vehicle moving 1 to 2 mph (1.6 to 3.2 km/h).
Press and release the Four-Wheel High or
Four-Wheel-High Lock button. You must wait for the
Four-Wheel High or Four-Wheel-High Lock indicator light
to stop ashing and remain lit before shifting your
transmission into gear.
It is normal for your vehicle to have engagement noise
and bump when shifting between Four-Wheel Low
and Four-Wheel High or Four-Wheel-High Lock ranges
or from NEUTRAL with the engine running.
If the Four-Wheel High or Four-Wheel-High Lock button
is pressed when your vehicle is in gear and/or moving,
the Four-Wheel High or Four-Wheel-High Lock indicator
light will ash for 30 seconds but will not complete
the shift unless your vehicle is moving less than 3 mph
(5 km/h) and the transmission is in NEUTRAL (N).
Notice:Shifting the transmission into gear before
the indicator light stops ashing could cause
damage to the transfer case. Always wait until the
indicator light stops ashing before putting the
transmission back in gear.
Shifting into NEUTRAL
To shift the transfer case to NEUTRAL, do the following:
1. Make sure the vehicle is parked so that it will
not roll.
2. Set the parking brake.
3. Start the vehicle or turn the ignition to RUN.
4. Put the transmission in NEUTRAL (N).
5. Shift the transfer case to Four-Wheel High.
6. Simultaneously press and hold the Four-Wheel
High and Four-Wheel Low Lock buttons for
10 seconds. The NEUTRAL light will come on when
the transfer case shift to NEUTRAL is complete.
7. If the engine is running, verify that the transfer case
is in NEUTRAL by shifting the transmission to
REVERSE (R), then shift the transmission to
DRIVE (D) and then back to NEUTRAL (N).
8. Turn the ignition to ACCESSORY, which will turn
the engine off.
9. Place the transmission shift lever in PARK (P).
10. Turn the ignition to LOCK.
2-33

Shifting Out of NEUTRAL
To shift the transfer case out of NEUTRAL, do
the following:
1. Set the parking brake and apply the regular
brake pedal.
2. Shift the transmission to NEUTRAL (N) and turn the
ignition to RUN with the engine off.
3. Press the button for the desired transfer case shift
position (Four-Wheel High, Four-Wheel-High Lock,
or Four-Wheel-Low Lock).
4. After the transfer case has shifted out of NEUTRAL
the red light will go out.
Notice:Shifting the transmission into gear before
the indicator light stops ashing could cause
damage to the transfer case. Always wait until the
indicator light stops ashing before putting the
transmission back in gear.
5. You may start the engine and shift the transmission
to the desired position.
Parking Brake
To set the parking brake, hold the regular brake pedal
down with your right foot. Push down the parking
brake pedal with your left foot.
A chime will activate and the warning light will ash when
the parking brake is applied and the vehicle is moving at
least 3 mph (5 km/h) for at least three seconds.
To release the parking brake, hold the regular brake
pedal down. Pull the bottom edge of the lever, located
above the parking brake pedal, with the parking
brake symbol, to release the parking brake.
2-34

If the ignition is on when the parking brake is released,
the brake system warning light will go off.
Notice:Driving with the parking brake on can
overheat the brake system and cause premature
wear or damage to brake system parts. Verify that
the parking brake is fully released and the brake
warning light is off before driving.
If you are towing a trailer and are parking on any hill,
seeTowing a Trailer on page 4-63.
Shifting Into Park (P)
{CAUTION:
It can be dangerous to get out of your vehicle
if the shift lever is not fully in PARK (P) with
the parking brake rmly set. Your vehicle can
roll. If you have left the engine running, the
vehicle can move suddenly. You or others
CAUTION: (Continued)
CAUTION: (Continued)
could be injured. To be sure your vehicle will
not move, even when you are on fairly level
ground, use the steps that follow. If you are
pulling a trailer, seeTowing a Trailer on
page 4-63.
1. Hold the brake pedal down with your right foot and
set the parking brake.
2. Move the shift lever into PARK (P) by pressing and
holding the button on the end of the shift lever and
moving the lever forward as far as it will go.
3. Turn the ignition key to LOCK.
4. Remove the key and take it with you. If you can
leave your vehicle with the ignition key in your
hand, your vehicle is in PARK (P).
2-35

{CAUTION:
Full-time four-wheel drive vehicles with the
transfer case in NEUTRAL will allow the
vehicle to roll, even if your shift lever is in
PARK (P). So, be sure the transfer case is in a
drive gear — not in NEUTRAL. Always set your
parking brake.
Follow the proper steps to be sure your vehicle will not
move. SeeShifting Into Park (P) on page 2-35.
If you are pulling a trailer, seeTowing a Trailer on
page 4-63.
Mirrors
Automatic Dimming Rearview Mirror
with OnStar
®and Compass
Your vehicle may have an automatic-dimming rearview
mirror with a compass and the OnStar®system.
There are three additional buttons for the OnStar
®
system. See your dealer for more information on the
system and how to subscribe to OnStar®. SeeOnStar®
System on page 2-48for more information about the
services OnStar®provides.
Mirror Operation
When turned on, this mirror automatically dims to the
proper level to minimize glare from any headlamps
behind you after dark.
O(On/Off): This is the on/off button for the automatic
dimming feature and compass. Press the far left button,
located below the mirror face, for up to three seconds
to turn the feature on and off. A light on the mirror will be
lit while the feature is turned on.
2-39

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-6
Tilt Wheel.....................................................3-6
Turn Signal/Multifunction Lever.........................3-7
Turn and Lane-Change Signals........................3-7
Headlamp High/Low-Beam Changer..................3-8
Flash-to-Pass.................................................3-8
Windshield Wipers..........................................3-9
Windshield Washer.........................................3-9
Rear Window Wiper/Washer (SUV).................3-10
Cruise Control..............................................3-11
Exterior Lamps.............................................3-14
Headlamps on Reminder................................3-15
Daytime Running Lamps (DRL).......................3-15
Automatic Headlamp System..........................3-16
Off-Road Lamps...........................................3-17
Instrument Panel Brightness...........................3-17
Dome Lamps...............................................3-18
Dome Lamp Override....................................3-18
Entry/Exit Lighting.........................................3-18
Reading Lamps............................................3-18
Battery Run-Down Protection..........................3-18
Rear Vision Camera......................................3-18
Accessory Power Outlet(s).............................3-21
Ashtray(s) and Cigarette Lighter......................3-22Climate Controls............................................3-22
Dual Automatic Climate Control System...........3-22
Outlet Adjustment.........................................3-28
Warning Lights, Gages, and Indicators............3-29
Instrument Panel Cluster................................3-30
Speedometer and Odometer...........................3-31
Trip Odometer..............................................3-31
Tachometer.................................................3-31
Safety Belt Reminder Light.............................3-31
Airbag Readiness Light..................................3-32
Airbag Off Light............................................3-32
Charging System Light..................................3-34
Voltmeter Gage............................................3-34
Brake System Warning Light..........................3-35
Anti-Lock Brake System Warning Light.............3-36
Traction Off Light..........................................3-36
Engine Coolant Temperature Gage..................3-37
Transmission Temperature Gage.....................3-37
Malfunction Indicator Lamp.............................3-39
Oil Pressure Gage........................................3-41
Security Light...............................................3-42
Cruise Control Light......................................3-43
Highbeam On Light.......................................3-43
Tow/Haul Mode Light....................................3-43
Fuel Gage...................................................3-44
Low Fuel Warning Light.................................3-44
Section 3 Instrument Panel
3-1

The main components of your instrument panel are the following:
A. Air Outlets. SeeOutlet Adjustment on page 3-28.
B. Exterior Lamps Control. SeeExterior Lamps
on page 3-14.
C. Heated Windshield Washer Control (If Equipped).
SeeWindshield Washer on page 3-9.
D. OnStar
®and Radio Steering Wheel Buttons. See
OnStar®System on page 2-48andAudio Steering
Wheel Controls on page 3-110.
E. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-30.
F. Locking Rear Axle and Full-Time Four-Wheel Drive
Buttons. SeeLocking Rear Axle on page 4-10
andFull-Time Four-Wheel Drive on page 2-30.
G. Audio System. SeeAudio System(s) on page 3-61.
H. Airbag Switch. SeeAirbag Off Switch on page 1-65.
I. Glove Box. SeeGlove Box on page 2-54.
J. Midgate Glass Up/Down Switch (SUT). See
Midgate
®(SUT) on page 2-12. Rear Wiper/Washer
Switch (SUV). SeeRear Window Wiper/Washer
(SUV) on page 3-10.
K. Dome Override Button. SeeDome Lamp Override
on page 3-18.
L. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 3-7.M. Tilt Lever. SeeTilt Wheel on page 3-6.
N. Driver Information Center (DIC) Buttons. SeeDriver
Information Center (DIC) on page 3-45.
O. Parking Brake Release. SeeParking Brake on
page 2-34.
P. Traction Control Button. SeeTraction Control
System (TCS) on page 4-9.
Q. Tow/Haul Selector Button. See “Tow/Haul Mode”
underTowing a Trailer on page 4-63.
R. Ride Height Selector Button (If Equipped). See
Selectable Extended Rear Ride Height on page 4-61.
S. Cigarette Lighter or Accessory Power Outlet (If
Equipped). SeeAshtray(s) and Cigarette Lighter on
page 3-22orAccessory Power Outlet(s) on
page 3-21.
T. Shift Lever. SeeAutomatic Transmission Operation
on page 2-27.
U. Accessory Power Outlets. SeeAccessory Power
Outlet(s) on page 3-21.
V. OnStar Buttons. SeeOnStar
®System on page 2-48.
W. Rear Window Defogger Button. See “Rear Window
Defogger” underDual Automatic Climate Control
System on page 3-22.
X. Climate Control System. SeeDual Automatic
Climate Control System on page 3-22.
3-5

Reducing Speed While Using
Cruise Control

Press in the button at the end of the lever until you
reach the lower speed you want, then release it.
To slow down in very small amounts, briey press
the set button. Each time you do this, you’ll go
about 1 mph (1.6 km/h) slower.
Passing Another Vehicle While Using
Cruise Control
Use the accelerator pedal to increase your speed.
When you take your foot off the pedal, your vehicle will
slow down to the cruise control speed you set earlier.
Using Cruise Control on Hills
How well your cruise control will work on hills depends
upon your speed, load and the steepness of the
hills. When going up steep hills, you may want to step
on the accelerator pedal to maintain your speed.
When going downhill, you may have to brake or shift to
a lower gear to keep your speed down. Of course,
applying the brake takes you out of cruise control. Many
drivers nd this to be too much trouble and don’t use
cruise control on steep hills.
Ending Cruise Control
There are four ways to turn off the cruise control:
Step lightly on the brake pedal,
move the cruise control switch to off, or
shift the transmission to NEUTRAL (N).
If road conditions cause the traction control system
to activate, cruise control will turn off. SeeTraction
Control System (TCS) on page 4-9.
If the accelerator pedal is held for 60 seconds or
longer, cruise control will turn off.
Erasing Speed Memory
When you turn off the cruise control or the ignition, your
cruise control set speed memory is erased.
3-13

When the DRL are on, only your DRL lamps will be on.
The taillamps, sidemarker and other lamps won’t be
on. The instrument panel won’t be lit up either.
When it begins to get dark, the automatic headlamp
system will switch from DRL to the headlamps.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Automatic Headlamp System
When it is dark enough outside and the headlamp
switch is in AUTO, your automatic headlamp system will
turn on your headlamps at the normal brightness
along with other lamps such as the taillamps,
sidemarker, parking lamps, roof marker lamps and the
instrument panel lights. The radio lights will also be dim.
To turn off the automatic headlamp system, turn the
exterior lamps switch to the off position and then
release. Turning off the automatic headlamp system
with the headlamp switch is not available for vehicles
rst sold in Canada. For vehicles rst sold in Canada,
you can turn off the automatic headlamp system
when parked at night by applying the parking brake
before starting your vehicle. The headlamps will remain
off once the vehicle is started for as long as you are
parked. If you release the parking brake, the lights willturn on. If the parking brake is not released before you
begin to drive, the exterior lamps will turn on above
2 mph (3.2 km/h).
Your vehicle has a light sensor located on the top of the
instrument panel. Be sure it is not covered, or the
system will be on whenever the ignition is on.
The system may also turn on your headlamps when
driving through a parking garage, heavy overcast
weather or a tunnel. This is normal.
There is a delay in the transition between the daytime
and nighttime operation of the Daytime Running
Lamps (DRL) and the automatic headlamp systems so
that driving under bridges or bright overhead street
lights does not affect the system. The DRL and
automatic headlamp system will only be affected when
the light sensor sees a change in lighting lasting
longer than the delay.
If you start your vehicle in a dark garage, the automatic
headlamp system will come on immediately. Once
you leave the garage, it will take approximately
one minute for the automatic headlamp system to
change to DRL if it is light outside. During that delay,
your instrument panel cluster may not be as bright
as usual. Make sure your instrument panel brightness
control is in the full bright position. SeeInstrument Panel
Brightness on page 3-17.
3-16

You can only drive for a short time with the reading in
either warning zone. If you must drive, turn off all
unnecessary accessories.
Readings in either warning zone indicate a possible
problem in the electrical system. Have the vehicle
serviced as soon as possible.
Brake System Warning Light
With the ignition on, the brake system warning light will
ash when you set the parking brake. The light will ash if
the parking brake does not release fully. If you try to drive
with the parking brake engaged, a chime will sound when
the vehicle speed is greater than 3 mph (5 km/h).
Your vehicle’s hydraulic brake system is divided into
two parts. If one part is not working, the other part can
still work and stop you. For good braking, though,
you need both parts working well.
If the warning light comes on and a chime sounds there
could be a brake problem. Have your brake system
inspected right away.This light should come on briey when you turn the
ignition key to RUN. If it does not come on then, have it
xed so it will be ready to warn you if there’s a problem.
If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal is
harder to push or may go closer to the oor. It may
take longer to stop. If the light is still on, have the vehicle
towed for service. SeeTowing Your Vehicle on
page 4-59.
{CAUTION:
Your brake system may not be working properly
if the brake system warning light is on. Driving
with the brake system warning light on can lead
to an accident. If the light is still on after you
have pulled off the road and stopped carefully,
have the vehicle towed for service.
United States
Canada
3-35