Hummer H1 Service Manual page 881

12-108 Electrical System
REMOTE ENTRY RECEIVER/TRANSMITTER
REPLACEMENT
Removal
1. Remove center console.
2. Disconnect wire connection at receiver and remove
reciever from engine cover (Figure 12-109).
3. Installation
1. Place hook and loop on back of receiver and place reciever
on engine cover.
2. Connect wire harness and reprogram system.
PROGRAMMING NEW OR REPLACEMENT
REMOTE TRANSMITTERS
Keyless Entry Remote Transmitter Trouble-
shooting
1. If the customer's complaint indicates a gradual decrease in
range of the remote transmitter, or intermittent operation
of the remote transmitter, the battery may need replace-
ment. The red Light Emitting Diode on the keyless entry
remote transmitter should illuminate brightly when a
remote transmitter button is pressed.
2. The remote transmitter may operate when the battery
voltage drops below 4.0V DC, however range and
reliability will be sacrificed at this level. When this same
battery is measured under load, the voltage will drop close
to or below the 3.0 VDC level. Battery replacement is
usually recommended when the voltage drops to or below
5.0 VDC with no load.
3. If the battery voltage is at an acceptable level, but the
remote transmitter will not activate the system, it may
need to be synchronized. To re-synchronize the remote
transmitter to the receiver, stand close to the vehicle and
press and release the LOCK button 2 times within one
second. The vehicle's horn should chirp one time
indicating that you have locked the doors and armed the
system. If re-synchronizing does not work on your first
attempt, try again slower, then again faster.
Programming The Keyless Entry Remote
Transmitters
You should have access to all keyless entry remote transmitters
that will ultimately operate the unit, even if they are currently
programmed to do so.
Each keyless entry receiver module will learn and store up to
four different remote transmitter codes. When a fifth remote
transmitters programmed, the first remote transmitter that was
originally programmed to the unit will be bumped out of the
system memory.
1. To start programming, make sure that the Theft Deterrent
System is disarmed, either by using a remote transmitter
that is currently programmed, or by using the The Deter-
4-1-00
______________________________________________________
rent System Override procedure explained in the operating
instructions.
2. Gain access to the programming push-button switch
located on the keyless entry control module, which is
mounted under the center console of the vehicle.
3. Turn the ignition key to the ON position.
4. Within 15 seconds, press and release the programming
switch 3 times. The vehicle horn will sound one time
indicating that the system is in program mode
5. Press and hold the LOCK button on the remote transmitter
until the vehicle horn sounds one long chirp.
6. Repeat step 5 for all remote transmitters that you wish to
program (up to four).
7. Turn the ignition key to the OFF position, or wait 15
seconds, and the system will automatically terminate the
programming mode. This is indicated by a 3 chirp signal
from the vehicle horn.
Remote Transmitter Programming Hints
1. If you wait more than 15 seconds between steps In the pro-
gramming mode, the system will automatically terminate the
programming mode. This is indicated by the 3 chirp signal
from the vehicles horn. Simply start over to complete program-
ming of all remote transmitters,
2 Test all programmed remote transmitters to be sure that all
buttons are operating, Remember the system will not remotely
lock the doors while the ignition key is in the ON position.
CHANGING THE SELECTABLE FEATURES
Some of the features of the keyless entry and theft deterrent
system Can be changed or tailored to the needs of the
owner.The following is a list of alterable features included in
the HUMMER remote entry system
1. Auto Door Lock
2. Auto Driver's Door Unlock
3. Auto passenger doors unlock
4. Active theft deterrent
5. Active door locking
Programming the Selectable Features
1. To start programming, make sure that the Theft Deterrent
System is disarmed, either by using a remote transmitter
that is currently programmed, or by using the Theft Deter-
rent System Override procedure.
2. Gain access to the programming pushbutton Switch
located on the keyless entry control module, which is
mounted in the center console of the vehicle.
3. Turn the ignition key to the "ON" position.
4. Within 15 seconds, press and release the programming
Switch 3 times. The vehicle's horn will sound one time
indicating that the system is in remote transmitter program
mode.
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