Hummer H2. Manual - part 202

Turn the ignition OFF while programming the GDO transmitter. Follow these steps to program up to 3 
channels: 

1. If you have previously programmed a transmitter, proceed to Step 2. Otherwise, hold down the 2 outside 

buttons on the GDO transmitter for approximately 20 seconds, until the light on the GDO transmitter 
begins to flash rapidly. Then release the buttons. This procedure erases any previous settings and 
initializes the memory for all 3 channels.  

2. Decide which of the 3 channels you want to program to the transmitter you have.  

3. Hold the end of the hand-held transmitter against the front surface of the GDO (less than 1 inch) so you 

can still see the light.  

4. Using both hands, press the hand-held transmitter button and the desired button on the GDO transmitter. 

Continue to hold both buttons through Step 5. 

5. Hold down the buttons on both transmitters until you see the light on the GDO transmitter flash slowly 

and then rapidly. The rapid flashing, which could take up to 90 seconds, indicates that the GDO 
transmitter has been programmed. Release the buttons on both transmitters when the light starts to flash 
rapidly.  

Training the GDO for Rolling Code Receivers 

This procedure is for training the customer's rolling code garage door openers to their GDO transmitter. The 
GDO must already be programmed to its hand-held transmitter. The training process below must be completed 
within 30 seconds or it must be repeated. 

1. Locate the train button on the garage door opener receiver. Refer to the operator's manual for the garage 

door opener (or call HomeLink(tm) at 1-800-355-3515 for assistance). Follow instructions for the garage 
door opener in order to determine when the unit is in train mode.  

2. Return to the GDO transmitter in the vehicle, and press the button that you want trained for rolling codes 

3 times, for 1 second each time. If not successfully programmed, try 2-5 seconds each time.  

3. Press the button used again in order to verify that the GDO transmitter has been programmed.  

You may use either the hand-held transmitter or the GDO to open the garage door. 

The GDO is compatible with most, but not all, types and brands of transmitters. If the GDO light does not flash 
rapidly after 90 seconds, there may be a compatibility conflict with the transmitter used to program the GDO. 
Call HomeLink(tm) at 1-800-355-3515 in order to address compatibility concerns. 

Erasing Channels 

IMPORTANT: The GDO is compatible with most, but not all, types and brands of 

transmitters. If the GDO light does not flash rapidly after 90 seconds, 
there may be a compatibility conflict with the transmitter used to program 
the GDO. Call HomeLink(tm) at 1-800-355-3515 in order to address this 
problem.

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Garage Door Opener - Hummer H2

  

To erase programmed channels, hold down the 2 outside buttons until the light on the GDO transmitter begins 
to flash. Individual channels cannot be erased, but can be reprogrammed using the Garage Door Opener 
Programming and the Training GDO for Rolling Code Receivers procedures. 

Non-Compatible Garage Door Openers 

DESCRIPTION AND OPERATION 

GARAGE DOOR OPENER DESCRIPTION AND OPERATION 

The garage door opener is located in the overhead console. The valet switch provides battery voltage to the 
garage door opener. If battery voltage is lost due to a condition such as a dead battery, the garage door opener 
unit relies on the non-servicable internal power backup supply. The unit is programmed using the customer's 
hand-held transmitters for the garage doors, electric entrance gates, or lighting and security systems. 

The garage door opener is rolling code capable. Rolling code is a system that allows the code that the customers 
receiver receives from the garage door opener to change every time the garage door opener is used within 
operating range of the receiver. When the receiver and the garage door opener are initially programmed 
together, a code is established, a new code is created for every new transmission. The software in the receiver 
recognizes the garage door opener and accepts the new code. 

The garage door opener is compatible with most, but not all types and brands of transmitters. If a problem 
should occur with a compatibility conflict with a transmitter, call HomeLink(tm) at 1-800-355-3515. 

The garage door opener is a transmitter operating between 288-399 MHz. The power and range of the 
transmitter is limited to comply with laws governing the generation of radio frequency interference (RFI). The 

Manufacturer

Model Number

Chamberlain

G-3467

Click Card

ATDG-90

Genie

AR-55

Genie

AR-30

Linear

Code Red

Linear

Moore-o-matic

Linear

DX Format

Micom

Safeway

Pulsar/Allister

20

Skylink

Skylink

Stanley

1048

Stanley

1054

Stanley

1064

Telectron

T-22A

Telectron

T-80

Telectron

T-80G

Telectron

TP-21

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Garage Door Opener - Hummer H2

  

transmitter is programmed by the user to accept the signal generated by the user's transmitters, refer to Garage 
Door Opener Programming - Universal . 

The garage door opener has 3 buttons that may be programmed for individual transmitter/receiver combinations 
to control up to 3 garage door openers, security gates, and lighting systems. Each button represents a transmitter 
code section of the transmitter, which operates separately from any other button, and may be considered a 
separate transmitter. Operation consists of simply pressing a button to activate the corresponding transmitter. 

Battery voltage is provided to the garage door opener from the IGN SEN fuse in the IP fuse block. The garage 
door opener is grounded through G400. Inadvertent power is supplied from the body control module (BCM). 

SPECIAL TOOLS AND EQUIPMENT 

SPECIAL TOOLS 

Special Tools 

Illustration

Tool Number/Description

J 41540 

HomeLink Tester

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Garage Door Opener - Hummer H2

  

2004 ACCESSORIES & EQUIPMENT

Power Outlets - Hummer H2 

SCHEMATIC AND ROUTING DIAGRAMS 

CIGAR LIGHTER/AUXILIARY OUTLETS SCHEMATICS 

Fig. 1: Cigar Lighter/Auxiliary Outlets 
Courtesy of GENERAL MOTORS CORP. 

COMPONENT LOCATOR 

POWER OUTLET COMPONENT VIEWS 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Power Outlets - Hummer H2

  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Power Outlets - Hummer H2