Hummer H2. Manual - part 345

Fig. 98: Connector Retention Clip 
Courtesy of GENERAL MOTORS CORP. 

21. Insert connector retention clip on the connector into the hole on the drivers' side lamp bar assembly 

stanchion. 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Lighting Systems - Hummer H2

  

Fig. 99: Roof Lamp Wire Connectors 
Courtesy of GENERAL MOTORS CORP. 

22. Inside the vehicle, guide the 3 individual wire connectors running out of the headliner through the power 

switch nut (1) and through the hole from the inside of the overhead center console.  

23. Insert the individual wire connectors into the terminals of the power switch, and insert the switch into the 

overhead center console. Hand tighten the power switch nut securely. Wires are to be placed in this order: 

z

Terminal 1= Blue Wire  

z

Terminal 2= Yellow Wire  

z

Terminal 3= Black Wire  

24. Install the overhead center console. Refer to Console Replacement - Overhead (Full Length)Console 

Replacement - Overhead (Short Length) in Interior Trim.  

25. Locate the harness connector for the overhead clearance lamp that was disconnected in step 15, and 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Lighting Systems - Hummer H2

  

connect to the new harness. Guide the remaining 2 connectors down to underneath the dash. 

26. Once the wires have been routed under the dash, locate the connectors on the body harness.  

27. Insert one wire and connector from roof lamp harness into one wire and connector in the body harness. 

Connect the remaining connectors. Tie wrap any loose wires securely to prevent squeaks, rattles, or wire 
damage.  

28. Replace the windshield pillar garnish molding. Refer to Garnish Molding Replacement - Windshield 

Pillar in Interior Trim.  

29. Replace the sunshade. Refer to Sunshade Replacement in Interior Trim.  

30. Operate lights and inspect for proper operation.  

MARKER LAMP BULB REPLACEMENT - SIDE 

The side marker lamps on this vehicle use an LED type system. If the lamp fails, it must be replaced as an 
assembly. There are no conventional type bulbs to replace. 

MARKER LAMP REPLACEMENT - FRONT SIDE 

Removal Procedure 

1. Open the hood. 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Lighting Systems - Hummer H2

  

Fig. 100: Retaining Nuts & Connecting Electrical Connector 
Courtesy of GENERAL MOTORS CORP. 

2. Disconnect the electrical connector (5).  

3. Remove the screws from the lamp housing.  

4. Remove the lamp, with the attached harness (1), from the hood.  

Installation Procedure 

1. Install the lamp, with the attached harness, to the hood. 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Lighting Systems - Hummer H2