2006 HUMMER H2 transmission

Indicator lights in the buttons show which mode you are
in. The indicator lights will come on briey when you
turn on the ignition and one 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 on 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 SERVICE 4WD message stays on, you should
take your vehicle to your dealer for service. See “Service
4WD message” underDriver Information Center (DIC)
on page 3-45.
Shifting between Four-Wheel High and
Four-Wheel-High Lock
With the vehicle traveling less than 40 mph (64 km/h),
press and release the Four-Wheel High or
Four-Wheel-Low Lock button. The indicator light will
ash while shifting. It will remain on when the shift
is complete.
It may be necessary to drive backwards for a short
distance of 25 feet (7.5 m) to get the lock feature
to disengage.
Shifting into Four-Wheel-Low Lock
To shift into Four-Wheel-Low Lock, the ignition must be in
RUN and the vehicle must be stopped or moving less
than 3 mph (5 km/h) with the transmission in
NEUTRAL (N). The preferred method for shifting into
Four-Wheel Low is to have your vehicle moving
1 to 2 mph (1.6 to 3.2 km/h). Press and release the
Four-Wheel-Low Lock button. You must wait for the
Four-Wheel-Low Lock indicator light to stop ashing and
remain lit before shifting your transmission in gear.
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.
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-Low Lock button is pressed when
your vehicle is in gear and/or moving, the Four-Wheel
Low Lock indicator light will ash for 15 seconds and not
complete the shift unless your vehicle is moving less
than 3 mph (5 km/h) and the transmission is in
NEUTRAL (N). After 15 seconds the transfer case will
return to the setting last chosen.
2-32

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

Leaving Your Vehicle With the Engine
Running
{CAUTION:
It can be dangerous to leave your vehicle with
the engine running. Your vehicle could move
suddenly if the shift lever is not fully in
PARK (P) with the parking brake rmly set.
And, if you leave the vehicle with the engine
running, it could overheat and even catch re.
You or others could be injured. Do not leave
your vehicle with the engine running.
If you have to leave your vehicle with the engine
running, be sure your vehicle is in PARK (P) and the
parking brake is rmly set before you leave it. After you
move the shift lever into PARK (P), hold the regular
brake pedal down. Then, see if you can move the shift
lever away from PARK (P) without rst pulling it
toward you. If you can, it means that the shift lever was
not fully locked into PARK (P).
Torque Lock
If you are parking on a hill and you do not shift your
vehicle into PARK (P) properly, the weight of the vehicle
may put too much force on the parking pawl in the
transmission. You may nd it difficult to pull the shift
lever out of PARK (P). This is called torque lock.
To prevent torque lock, set the parking brake and then
shift into PARK (P) properly before you leave the
driver’s seat. To nd out how, seeShifting Into Park (P)
on page 2-35.
When you are ready to drive, move the shift lever out of
PARK (P) before you release the parking brake.
If torque lock does occur, you may need to have another
vehicle push yours a little uphill to take some of the
pressure from the parking pawl in the transmission, so
you can pull the shift lever out of PARK (P).
Shifting Out of Park (P)
Your vehicle has an automatic transmission shift lock
control system. You have to fully apply the regular
brakes before you can shift from PARK (P) when the
ignition is in RUN. SeeAutomatic Transmission
Operation on page 2-27.
2-36

Keep the original hand-held transmitter for use in other
vehicles as well as for future Universal Home Remote
programming. It is also recommended that upon the sale
of the vehicle, the programmed Universal Home
Remote buttons should be erased for security purposes.
See “Erasing Universal Home Remote Buttons” later
in this section or, for assistance, seeCustomer
Assistance Offices on page 7-4.
Be sure that people and objects are clear of the garage
door or gate operator you are programming. When
programming a garage door, it is advised to park outside
of the garage.
It is recommended that a new battery be installed in
your hand-held transmitter for quicker and more
accurate transmission of the radio-frequency signal.
Programming Universal Home Remote
Follow these steps to program up to three channels:
1. Press and hold down the two outside Universal
Home Remote buttons, releasing only when the
Universal Home Remote indicator light begins to
ash, after 20 seconds. Do not hold down the
buttons for longer than 30 seconds and do not repeat
this step to program a second and/or third hand-held
transmitter to the remaining two Universal Home
Remote buttons.
2. Position the end of your hand-held transmitter
about 1 to 3 inches (3 to 8 cm) away from the
Universal Home Remote buttons while keeping the
indicator light in view.3. Simultaneously press and hold both the desired
Universal Home Remote button and the hand-held
transmitter button. Do not release the buttons
until Step 4 has been completed.
Some entry gates and garage door openers may
require you to substitute Step 3 with the procedure
noted in “Gate Operator and Canadian
Programming” later in this section.
4. The indicator light will ash slowly at rst and then
rapidly after Universal Home Remote successfully
receives the frequency signal from the hand-held
transmitter. Release both buttons.
5. Press and hold the newly-trained Universal Home
Remote button and observe the indicator light.
If the indicator light stays on constantly,
programming is complete and your device should
activate when the Universal Home Remote button is
pressed and released.
To program the remaining two Universal Home
Remote buttons, begin with Step 2 under
“Programming Universal Home Remote.” Do not
repeat Step 1 as this will erase all of the
programmed channels.
If the indicator light blinks rapidly for two seconds
and then turns to a constant light, continue with
Steps 6 through 8 following to complete the
programming of a rolling-code equipped device,
most commonly, a garage door opener.
2-51

6. Locate in the garage, the garage door opener
receiver (motor-head unit). Locate the “Learn”
or “Smart” button. This can usually be found where
the hanging antenna wire is attached to the
motor-head unit.
7. Firmly press and release the “Learn” or “Smart”
button. The name and color of the button may
vary by manufacturer.
You will have 30 seconds to start Step 8.
8. Return to the vehicle. Firmly press and hold the
programmed Universal Home Remote button for
two seconds, then release. Repeat the press/
hold/release sequence a second time, and
depending on the brand of the garage door opener,
or other rolling code device, repeat this sequence
a third time to complete the programming.
The Universal Home Remote should now activate
your rolling-code equipped device.
To program the remaining two Universal Home Remote
buttons, begin with Step 2 of “Programming Universal
Home Remote.” You do not want to repeat Step 1,
as this will erase all previous programming from
the Universal Home Remote buttons.Gate Operator and Canadian
Programming
Canadian radio-frequency laws require transmitter
signals to time out or quit after several seconds of
transmission. This may not be long enough for Universal
Home Remote to pick up the signal during programming.
Similarly, some U.S. gate operators are manufactured
to time out in the same manner.
If you live in Canada, or you are having difficulty
programming a gate operator or garage door opener by
using the “Programming Universal Home Remote”
procedures, regardless of where you live, replace
Step 3 under “Programming Universal Home Remote”
with the following:
Continue to press and hold the Universal Home Remote
button while you press and release every two seconds
(cycle) the hand-held transmitter button until the
frequency signal has been successfully accepted by the
Universal Home Remote. The Universal Home Remote
indicator light will ash slowly at rst and then rapidly.
Proceed with Step 4 under “Programming Universal
Home Remote” to complete.
Using Universal Home Remote
Press and hold the appropriate Universal Home Remote
button for at least half of a second. The indicator light
will come on while the signal is being transmitted.
2-52

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