For 1999 and later Hummers: (For 1998 and earlier, see below)

• Have all remotes available even ones that are currently programmed. (You can program up to 4 remotes)

• Locate keyless entry module (black box under dog house) which is usually accessible by removing the cup holders.

• Turn Ignition ON

• Within 15 seconds, press the programming button (on the keyless entry module) 3 times. The horn will beep once indicating program mode.

• Press and hold LOCK button on the remote transmitter until the horn honks 1 long chirp. Repeat for each additional remote.

• Turn ignition key OFF or wait 15 seconds and the system will go out of programming mode and the horn will beep 3 times.

• Test remotes that were programmed.

CHANGING THE FEATURES OF THE KEYLESS ENTRY SYSTEM:

Programmable Features:

1. Auto Door Lock - Factory Preset to ON (doors will lock 3 seconds after ignition on if doors are closed)

2. Auto Drivers Door Unlock - Factory Preset to ON (drivers door will auto unlock 3 seconds after ignition turned off)

3. Auto Passenger Doors Unlock - Factory Preset to OFF (when on passenger doors will auto unlock 3 seconds after ignition is turned off)

4. Active Theft Deterrent - Factory Preset to ACTIVE when active, the theft deterrent system arms when the remote transmitter LOCK button is pressed. When changed to PASSIVE the theft deterrent system automatically arms 30 seconds after the ignition is turned off and all doors are closed keep in mind you could lock your keys in the truck if you leave them in there.

5. Active Door Locking - Factory Preset to ACTIVE. If you want 5 to be PASSIVE then 4 also has to be PASSIVE. When Active the doors will lock when the remote LOCK is pressed. When Passive the doors will lock 30 seconds after ignition is turned off and the vehicle is exited and doors are closed.

Programming the Selectable Features:

• Locate keyless entry module (black box under dog house) which is usually accessible by removing the cup holders.

• Turn Ignition ON

• Within 15 seconds, press the programming button (on the keyless entry module) 3 times. The horn will beep once indicating program mode

• Turn Ignition OFF the horn will beep twice indicating feature programming mode

• Press programming button on the keyless entry module 1 time to go to feature 1 the horn will then beep indicating the current setting of the feature ? 1 time for ON and 2 times for OFF

• To change the feature setting press the LOCK button on the remote transmitter and the horn will beep and identify the new selection (either 1 beep for ON or 2 beeps for OFF)

• To go to the next feature press the keyless programming button another time and the horn will beep indicating that features current setting. Each time you press the keyless programming button it will advance to the next feature.

• When finished turn ignition key off or wait 15 seconds and the horn will beep 3 times as it exits out of programming mode.

Joe G.

For 1998 and earlier Hummers:

The receiver can be programmed to work with up to four transmitters. To add, replace and/or delete transmitter:

1. Locate the unconnected gray wire with a pink or red connector taped to the remote entry harness connected to the receiver module beneath the console cover.

2. Assemble all the transmitters to be used.

3. Turn on the ignition switch.

4. Ground the pink-red connector four times in succession. The parking lamps will flash four times and the system will reset itself in the program mode.

5. Push the button on any transmitter and the lights will flash once.

6. Repeat this for the remaining transmitters for up to four transmitters. The above must be accomplished within 30 seconds from grounding the gray wire connector or the system will exit the programming mode and the procedure will have to be repeated.

7. Turn the ignition switch off following the above and check each transmitter for correct function.

Dave B.

One button Keyless Entry Remote Transmitters:
Here is the part# and sources for the early one button transmitters;
Remotes Unlimited
281-820-0300 EXT 101
Ask for part number 484-1484 or RT1

Or here
BUTTON: 1 PN TDS-1
LED or LIGHT: RED
BOARD#: P86 28-04 315Mhz
FCC ID: JDRAPSBT
MODEL: APSBT
DOC/MDC: 723-K899 ROSTRA

Frankie O