Hummer H2. Manual - part 1298

4. Separate the relay (1) from the wire harness connector (2).  

Installation Procedure 

Fig. 113: Relay & Wire Harness Connector 
Courtesy of GENERAL MOTORS CORP. 

1. Connect the relay (1) to the wire harness connector (2).  

2. Install any connector position assurance (CPA) devices or secondary locks.  

3. Install the relay using any fasteners or tape that originally held the relay in place.  

UNDERHOOD ELECTRICAL CENTER OR JUNCTION BLOCK REPLACEMENT 

Removal Procedure 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2

  

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure 

(Single Battery) in Engine Electrical. 

Fig. 114: Left Fender Upper Brace 
Courtesy of GENERAL MOTORS CORP. 

2. Remove the left fender upper brace. 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2

  

Fig. 115: Electrical Center Brace Cover Assemble 
Courtesy of GENERAL MOTORS CORP. 

3. Remove the electrical center brace cover assemble by lifting the cover (3) outwards to clear the tabs.  

4. Remove all fuses and relays. 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2

  

Fig. 116: Connectors & Electrical Center Block 
Courtesy of GENERAL MOTORS CORP. 

5. Push on the tab (3) so that the electrical center can be rotated on the studs located at (2).  

6. Remove all connectors by removing the bolt (1) for each connector.  

7. Disconnect all connectors from the electrical center block. 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2