Hummer H2. Manual - part 446

Schematic Reference: Outside Mirror Schematics

1

Did you perform the Door Systems Diagnostic 
System Check?

Go to Step 2

Go to Diagnostic 

System Check - 

Door Systems

2

Verify the heated mirrors inoperative fault is 
present. 
Do the heated mirrors operate normally?

Go to Testing for 

Intermittent Conditions 

and Poor Connections 

in Wiring Systems

Go to Step 3

3

Does the rear window defogger operate properly?

Go to Step 4

Go to Defogger 

Inoperative - Rear 

Window in 

Stationary Windows

4

1. Disconnect the appropriate mirror.  

2. Start the engine.  

3. Connect a test lamp between the mirror 

heater control and the mirror heater ground 
circuit pins of the appropriate door module.  

4. Activate the rear window defogger switch.  

Does the test lamp illuminate?

Go to Step 5

Go to Step 6

5

Inspect for poor connections at the harness 
connector of the outside rearview mirror. 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 9

Go to Step 7

6

Inspect for poor connections at the harness 
connector of the appropriate door module. 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 9

Go to Step 8

7

Replace the appropriate outside rearview mirror 
face. 
Did you complete the replacement?

Go to Step 9

-

8

Replace the appropriate door module. Refer to 
Switch Replacement - Door Lock and Side 
Window - Driver or Switch Replacement - Door 
Lock and Side Window - Passenger .Did you 
complete the replacement?

IMPORTANT:

Perform the set up procedure for the 
appropriate door module. Refer to Service 
Programming System (SPS) in Programming.

Go to Step 9

-

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

REPAIR INSTRUCTIONS 

POWER WINDOW SWITCH REPLACEMENT - REAR DOOR 

Removal Procedure 

9

Operate the system in order to verify the repair. 
Did you correct the condition?

System OK

Go to Step 2

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

Fig. 14: Rear Door Power Window Switch 
Courtesy of GENERAL MOTORS CORP. 

1. Use a suitable flat bladed tool to remove the power window switch from the door panel.  

2. Remove the power window switch from the connector.  

Installation Procedure 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

Fig. 15: Rear Door Power Window Switch 
Courtesy of GENERAL MOTORS CORP. 

1. Install the power window switch to the connector.  

2. Align the power window switch with the opening in the door panel and press to seat the switch.  

SWITCH REPLACEMENT - DOOR LOCK AND SIDE WINDOW - DRIVER 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2