Hummer H2. Manual - part 199

2004 ACCESSORIES & EQUIPMENT

Garage Door Opener - Hummer H2 

SPECIFICATIONS 

FASTENER TIGHTENING SPECIFICATIONS 

Fastener Tightening Specifications 

SCHEMATIC AND ROUTING DIAGRAMS 

GARAGE DOOR OPENER SCHEMATICS 

Fig. 1: Garage Door Opener 
Courtesy of GENERAL MOTORS CORP. 

COMPONENT LOCATOR 

Application

Specification

Metric

English

Transmitter Module Retaining Screws

2 N.m

18 lb in

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Garage Door Opener - Hummer H2

  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Garage Door Opener - Hummer H2

  

GARAGE DOOR OPENER COMPONENT VIEWS

Fig. 2: Garage Door Opener Component Views 
Courtesy of GENERAL MOTORS CORP. 

Callouts For Fig. 2 

GARAGE DOOR OPENER CONNECTOR END VIEWS 

Garage Door Opener - Terminal Identification 

Callout

Component Name

1

Garage Door Opener

2

Noise Cancellation Microphone

3

Overhead Console

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Garage Door Opener - Hummer H2

  

DIAGNOSTIC INFORMATION AND PROCEDURES 

DIAGNOSTIC STARTING POINT - GARAGE DOOR OPENER 

Begin the system diagnosis by reviewing the system Description and Operation. Reviewing the Description and 
Operation information will help you determine the correct symptom diagnostic procedure to use when a 
malfunction exists. Reviewing the Description and Operation information will also help you determine if the 
condition described by the customer is normal operation. Refer to Symptoms - Garage Door Opener in order 
to identify the correct procedure for diagnosing the system and where the procedure is located. 

SYMPTOMS - GARAGE DOOR OPENER 

Visual/Physical Inspection 

z

Inspect for aftermarket devices which could affect the operation of the garage door opener. Refer to 
Checking Aftermarket Accessories in Wiring Systems.  

z

Inspect the easily accessible or visible system components for obvious damage or conditions which could 
cause the symptom.  

Intermittent 

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for 

Connector Part Information

z

12162335  

z

3-Way F Molex Edge Card (NA)  

Pin

Wire Color

Circuit No.

Function

1

OG

4540

Battery Positive Voltage

2

BN/WH

230

Instrument Panel Lamps Dimming Control

3

BK

1050

Ground

IMPORTANT: Review the system description and operation in order to familiarize yourself 

with the system functions. Refer to Garage Door Opener Description and 
Operation .

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Garage Door Opener - Hummer H2

  

Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List 

Refer to Garage Door Opener Inoperative in order to diagnose the symptom. 

GARAGE DOOR OPENER INOPERATIVE 

Garage Door Opener Inoperative 

Step

Action

Yes

No

1

Did you review the Garage Door Opener Description and 
Operation and perform the necessary inspections?

Go to 

Step 2

Go to Garage Door 

Opener Description and 

Operation

2

Operate each button on the garage door opener one at a 
time.Do all 3 buttons illuminate the LED?

IMPORTANT:

If the vehicle is equipped with a valet switch, verify that the 
switch is in the OFF position.

Go to 

Step 4

Go to Step 3

3

Do any buttons illuminate the LED?

Go to 

Step 9

Go to Step 5

4

1. Place the J 41540 HomeLink Tester, adjacent to the 

GDO as indicated. See Special Tools and Equipment . 

2. Operate each button on the garage door opener.  

Does the J 41540 verify each button when pressed? See 
Special Tools and Equipment .

Go to 

Step 9

Go to Step 8

5

Test the Switched Ignition Voltage circuit for an open, high 
resistance or a short to ground. Refer to Circuit Testing and 
Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to 

Step 11

Go to Step 6

6

Test the Inadvertent Power Supply circuit for an open, high 
resistance or short to ground. Refer to Circuit Testing and 
Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to 

Step 11

Go to Step 7

7

Test the ground circuit for an open or high resistance. Refer to 
Circuit Testing and Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to 

Step 11

Go to Step 8

8

Inspect for poor connection at the harness connector. Refer to 
Testing for Intermittent Conditions and Poor Connections
and Connector Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to 

Step 11

Go to Step 9

9

Replace the garage door opener. 
Did you complete the replacement?

Go to 

Step 10

or

Program the garage door opener. Refer to Garage Door 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Garage Door Opener - Hummer H2