2005 HUMMER H2 ECU

To replace the battery in the keyless entry transmitter,
do the following:
1. Insert a thin object, such as a coin, in the slot
between the covers of the transmitter housing near
the key ring hole. Remove the bottom by twisting
the coin.
2. Remove and replace the battery with a
three-volt CR2032 or equivalent battery, positive (+)
side up.
3. Align the covers and snap them together.
4. Resynchronize the transmitter. See
“Resynchronization” following this information.
5. Check the operation of the transmitter.Resynchronization
Resynchronization may be necessary due to the
security method used by this system. The transmitter
does not send the same signal twice to the receiver. The
receiver will not respond to a signal that has been
sent previously. This prevents anyone from recording
and playing back the signal from the transmitter.
To resynchronize your transmitter, stand close to your
vehicle and press and hold the lock and unlock
buttons on the transmitter at the same time for
15 seconds. The door locks should cycle to conrm
synchronization. If the locks do not cycle, see your
dealer for service.
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Rear Door Security Locks
With this feature, you can lock the rear doors so they
cannot be opened from the inside.
This feature is located on
the inside edge of the rear
doors.
To use the security locks, do the following:
1. Open one of the rear doors.2. Turn the lock
counterclockwise with
your ignition key.
3. Close the door.
4. Do the same to the other rear door.
If you want to open the rear door while the security lock
is engaged, unlock and open the door from the
outside.
To disengage the child security lock feature, turn the
lock clockwise with your ignition key.
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3. Press either one of the two power midgate latch
release buttons. The midgate will move slightly
forward from its closed position. The latch release
buttons operate while the ignition is in RUN,
ACCESSORY, in RAP mode, or up to ten minutes
after removing the key. If necessary, press the
global express-down button to reactivate the release
buttons for an additional ten minutes.4. Pull the midgate inward and down to its fully
lowered position.
5. Flip the auxiliary panel on the top of the midgate
into position to bridge the gap created by the
hinges in the midgate. There are two nger holds
on the panel.
Raising the Midgate
To raise the midgate, do the following:
1. Fold the auxiliary panel back into the exterior of the
midgate. The panel should snap loudly back into
position which means it is secure.
2. Reverse the steps for lowering the midgate listed
previously. The midgate must be fully latched on
both sides before the window can be raised.
3. Press the top part of the midgate window switch to
express-up the window. To stop the window, press
the switch a second time.
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Tailgate (SUT)
{CAUTION:
Make sure the tire and carrier are secure.
Driving with the tire or carrier unlatched could
injure pedestrians or damage the vehicle.Before you can open the tailgate, you must rst move
the spare tire carrier out of the way. To do this,
follow these steps:
1. Lift the latch located on the left side of the tire
carrier to release it.
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To Exit Error/Jog Mode
1. Ensure normal midgate window operating conditions
have been resumed.
2. Press and hold the midgate window down switch
approximately one second to engage window
express-down.
3. Release the window down switch and allow the
window to fully open.
Do not activate any window function switches once
glass movement has been initiated.
4. Press the midgate glass up switch and visually
conrm that the express-up has been accomplished.
Sun Visors
To block out glare, you can swing down the visors. You
can also swing them out to help block glare at the
front and side windows.
Illuminated Visor Vanity Mirrors
Pull the sunvisor down and lift the mirror cover to turn
on the lamps.
Theft-Deterrent Systems
Vehicle theft is big business, especially in some cities.
Although your vehicle has a number of theft-deterrent
features, we know that nothing we put on it can make it
impossible to steal.
Content Theft-Deterrent
Your vehicle is equipped with a content theft-deterrent
alarm system.
With this system, the
security light in the
instrument panel cluster will
ash as you open the door
if your ignition is off.
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This light reminds you to activate the theft-deterrent
system. Here’s how to do it:
1. Open the door.
2. Lock the door with the power door lock switch or
the remote keyless entry transmitter. The security
light should come on and stay on.
3. Close all doors. The security light should go off
after about 30 seconds. The alarm is not armed
until the security light goes off.
If a locked door is opened without the key or the remote
keyless entry transmitter, the alarm will go off. The
headlamps and parking lamps will ash for two minutes,
and the horn will sound for 30 seconds, then will turn
off to save the battery power. You can choose different
feedback options for the alarm. SeeDriver Information
Center (DIC) on page 3-43.
Remember, the theft-deterrent system won’t activate if
you lock the doors with a key or use the manual
door lock. It activates only if you use a power door lock
switch with the door open, or with the remote keyless
entry transmitter. You should also remember that
you can start your vehicle with the correct ignition key if
the alarm has been set off.Here’s how to avoid setting off the alarm by accident:
If you don’t want to activate the theft-deterrent
system, the vehicle should be locked with the door
keyafterthe doors are closed.
Always unlock a door with a key, or use the remote
keyless entry transmitter. Unlocking a door any
other way will set off the alarm.
If you set off the alarm by accident, unlock any door with
the key. You can also turn off the alarm by pressing
unlock on the remote keyless entry transmitter. The alarm
won’t stop if you try to unlock a door any other way.
Testing the Alarm
The alarm can be tested by following these steps:
1. From inside the vehicle, lower the driver’s window
and open the driver’s door.
2. Activate the system by locking the doors with the
power door lock switch while the door is open, or
with the remote keyless entry transmitter.
3. Get out of the vehicle, close the door and wait for
the security light to go out.
4. Then reach in through the window, unlock the door
with the manual door lock and open the door. This
should set off the alarm.
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While the alarm is set, the power door unlock switch is
not operational.
If the alarm does not sound when it should but the
headlamps ash, check to see if the horn works. The
horn fuse may be blown. To replace the fuse, see
Instrument Panel Fuse Block on page 5-103and
Underhood Fuse Block on page 5-107.
If the alarm does not sound or the headlamps do not
ash, the vehicle should be serviced by your dealer.
Passlock®
Your vehicle is equipped with the Passlock®
theft-deterrent system.
Passlock
®is a passive theft-deterrent system. Passlock®
enables fuel if the ignition lock cylinder is turned with
a valid key. If a correct key is not used or the ignition
lock cylinder is tampered with, the fuel system is
disabled and the vehicle will not start.
During normal operation, the security light will turn off
approximately ve seconds after the key is turned
to RUN.If the engine stalls and the security light ashes, wait
about 10 minutes until the light stops ashing before
trying to restart the engine. Remember to release
the key from START as soon as the engine starts.
If the engine does not start after three tries, the vehicle
needs service.
If the engine is running and the security light comes on,
you will be able to restart the engine if you turn the
engine off. However, your Passlock
®system is
not working properly and must be serviced by your
dealer. Your vehicle is not protected by Passlock
®at this
time. You may also want to check the fuse. See
Instrument Panel Fuse Block on page 5-103and
Underhood Fuse Block on page 5-107. See your dealer
for service.
In an emergency, call the Roadside Assistance Center.
SeeRoadside Assistance Program on page 7-6.
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Outside Automatic Dimming Mirror
with Curb View Assist
If the vehicle has this feature, the driver’s outside mirror
adjusts for the glare of the headlamps behind you.
SeeAutomatic Dimming Rearview Mirror with Compass
and Temperature Display on page 2-43.
The vehicle’s outside mirrors can also perform a curb
view assist mirror function. This causes the passenger’s
and/or driver’s mirror to tilt to a preselected position
when the vehicle is in REVERSE (R). This feature may
be useful in viewing the curb when parallel parking.
When the vehicle is shifted out of REVERSE (R) and a
short delay has occurred, the passenger’s and/or
driver’s mirror will return to its original position.
To change the preselected tilt position, adjust the
mirrors to the desired position while the vehicle is in
REVERSE (R). When the vehicle is shifted out of
REVERSE (R), this new position is saved in memory as
the tilt position.
This feature can be enabled/disabled through the Driver
Information Center. SeeDriver Information Center (DIC)
on page 3-43for more information.
OnStar®System
OnStar®uses global positioning system (GPS) satellite
technology, wireless communications, and call centers
to provide you with a wide range of safety, security,
information, and convenience services.
A complete OnStar
®user’s guide and the terms and
conditions of the OnStar®Subscription Service
Agreement are included in the vehicle’s glove box
literature. For more information, visit www.onstar.com
or www.onstarcanada.com. Contact OnStar
®at
1-888-4-ONSTAR (1-888-466-7827), or press the
OnStar
®button to speak to an OnStar®advisor
24 hours a day, 7 days a week.
Terms and conditions of the Subscription Service
Agreement can be found at www.onstar.com or
www.onstarcanada.com.
OnStar®Services
The Safe and Sound Plan is included on new vehicles
for the rst year. You can upgrade to the Directions and
Connections Plan or extend the OnStar
®service plan
that best meets your needs. For more information, press
the OnStar
®button to speak to an advisor.
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