Hummer H2. Manual - part 749

Fig. 30: Wiper Transmission Bolts & Electrical Connector 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement in Body Front End.  

2. Remove the bolts (1) retaining the transmission to the vehicle.  

3. Disconnect the wiper motor electrical connector (2).  

4. Remove the wiper transmission from the vehicle.  

Installation Procedure 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wipers/Washer Systems - Hummer H2

  

Fig. 31: Wiper Transmission Bolts & Electrical Connector 
Courtesy of GENERAL MOTORS CORP. 

1. Align the wiper transmission to vehicle. 

2. Install the bolts (1) retaining the wiper transmission to the vehicle. 

Tighten: Tighten the bolts to 9 N.m (7 lb ft). 

3. Connect the wiper motor electrical connector (2).  

4. Install the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement in Body Front End.  

5. Engage wipers and check for proper operation.  

WIPER CHATTER REPAIR 

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wipers/Washer Systems - Hummer H2

  

Some vehicles may exhibit a condition where the windshield wiper blades chatter or wipe unevenly. Several 
different conditions can cause the wiper blade chatter. To completely repair wiper blade chatter, all of the 
following should be checked and repaired as necessary: 

z

The windshield glass must be clean.  

z

The wiper blade element must be clean.  

z

The wiper arm tip pressure must be within specifications.  

z

The wiper blade element set must be within specifications.  

WINDSHIELD GLASS CLEANING 

Clean the windshield glass with windshield cleaner. The cleaner used should be one that will not harm the paint 
finish or scratch the glass. The windshield glass is clean when water no longer beads, but sheets across the 
entire glass surface. 

BLADE ELEMENT CLEANING 

1. Lift the wiper blade assemblies off of the windshield glass.  

2. Clean the wiper blade element with a clean cloth saturated with full strength washer solution.  

3. Rinse the wiper blade assemblies with water.  

4. Place the wiper blade assemblies back onto the windshield glass.  

WIPER ARM REPLACEMENT - REAR 

Removal Procedure 

IMPORTANT: Note the location of the wiper on the window before removal.

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wipers/Washer Systems - Hummer H2

  

Fig. 32: Rear Wiper Arm 
Courtesy of GENERAL MOTORS CORP. 

1. Disconnect the washer hose (4).  

2. Swivel the wiper arm cover open (2).  

3. Remove the nut (3) retaining the wiper arm to the wiper motor.  

4. Remove the wiper arm from the liftgate.  

Installation Procedure 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wipers/Washer Systems - Hummer H2