Hummer H2. Manual - part 412

Fig. 3: Opening Transmitter Case 
Courtesy of GENERAL MOTORS CORP. 

2. Twist the dime.  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Keyless Entry - Hummer H2

  

Fig. 4: Transmitter Battery 
Courtesy of GENERAL MOTORS CORP. 

2. Remove the battery.  

Installation Procedure 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Keyless Entry - Hummer H2

  

Fig. 5: Transmitter Battery 
Courtesy of GENERAL MOTORS CORP. 

1. Install the battery with the (+) side down.  

2. In order to close the transmitter case, perform the following steps: 

1. Align the top and bottom covers.  

2. Snap together the top and bottom covers.  

3. Inspect the operation of the transmitter.  

TRANSMITTER PROGRAMMING 

There are 3 methods for programming transmitters, which are listed below as methods 1-3. Up to 4 transmitters 
may be programmed to the passenger door module (PDM). Each programmed transmitter is given a position of 
#1-#4 in the PDM memory. 

Method 1 - No Tools Required, Program All Transmitters 

IMPORTANT: Do not operate or program the transmitters in the vicinity of other vehicles that 

are in the keyless entry program mode. This prevents the programming of the 
transmitters to the incorrect vehicle.

IMPORTANT: All transmitters which are to be recognized by the PDM must be programmed in 

a single programming sequence. When using this program method, all 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Keyless Entry - Hummer H2

  

1. Close all the vehicle doors.  

2. Insert the ignition key into the ignition lock cylinder.  

3. Press and hold the door unlock switch.  

4. While holding the door lock switch in the unlock position, cycle the ignition ON, OFF, ON, OFF.  

5. Release the door unlock switch. The doors will lock and unlock to confirm the program mode.  

6. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a 

delay of approximately 15 seconds, the doors will lock and unlock to confirm the programming of that 
transmitter.  

7. Repeat the previous step to program up to 4 transmitters.  

8. Turn the ignition switch to the RUN position in order to exit the keyless entry transmitter programming 

mode.  

9. Operate the transmitter functions in order to verify correct system operation.  

Method 2 - Scan Tool Required, Program Individual Transmitter 

Only use this option if you are certain which transmitter, #1-#4, is being replaced, or the new transmitter can be 
programmed into a previously unused position within the PDM memory. 

1. Install a scan tool.  

2. Turn the ignition ON, with the engine OFF.  

3. Use the scan tool in order to access the passenger door module Special Function menu.  

4. Select Program Individual Key Fob to program specific transmitters.  

5. Follow the directions on the scan tool in order to program the transmitter or transmitters. 

previously programmed transmitters will be erased upon the receipt of the 
programming signal from the first transmitter. 
The order in which the transmitters are programmed will determine its 
numbering position within the PDM memory. The first transmitter programmed 
will be transmitter #1, and the second transmitter programmed will be 
transmitter #2. The number stamped on the transmitter case is for reference 
only; #2 can be programmed as #1, or vice versa. Additional unnumbered 
transmitters are also available.

IMPORTANT: All transmitters which are to be recognized by the PDM must be programmed in 

a single programming sequence. When using this program method, all 
previously programmed transmitters will be erased upon the receipt of the 
programming signal from the first transmitter. 
The order in which the transmitters are programmed will determine its 
numbering position within the PDM memory. The first transmitter programmed 
will be transmitter #1, and the second transmitter programmed will be 
transmitter #2. The number stamped on the transmitter case is for reference 
only; #2 can be programmed as #1, or vice versa. Additional unnumbered 
transmitters are also available.

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Keyless Entry - Hummer H2