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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting >> Repair Instructions >> Off Road Lamp Replacement (Base) >> Installation Procedure

Installation Procedure

    Fig 1: Lamps & Lamp Bar Assembly
    GM953754Courtesy of GENERAL MOTORS CORP.
  1. Install the lamps into the U-brackets of the lamp bar assembly.
    2. NOTE: Refer to Fastener Notice .
  2. Install the bolts (1) through the U-brackets and the lamps.

    Tighten:  Tighten the bolts to 15 N.m (11 lb ft).

  3. Connect the lamp electrical connectors (2), and snap the connectors into the retainers on the back of the lamp stanchions (3).

    If equipped, remove the luggage carrier roof rails. Refer to Luggage Carrier Replacement (SUT) or Luggage Carrier Replacement (SUV) .

    4. Fig 2: Lamp Bar Assembly
    GM961317Courtesy of GENERAL MOTORS CORP.
  4. Guide the lamp bar assembly, with the lamps installed, onto the roof through the openings in the roof rails.
  5. If equipped, replace the luggage carrier roof rails. Refer to Luggage Carrier Replacement (SUT) or Luggage Carrier Replacement (SUV) .
    6. Fig 3: Lamp Covers
    GM961578Courtesy of GENERAL MOTORS CORP.
  6. Install the lamp covers.
  7. Remove the overhead console. Refer Roof Console Replacement .
  8. Remove the windshield side pillar garnish molding. Refer to Windshield Side Garnish Molding Replacement .
  9. Remove the sunshade. Refer to Sunshade Replacement .
  10. Route the section of the body harness containing the three individual wire connectors up the windshield pillar and through the headliner into the overhead console opening.
    11. Fig 4: Harness Section
    GM962277Courtesy of GENERAL MOTORS CORP.
  11. Route the section of the harness with the connector under the dashboard, and connect into the Z82 location of the MidBec (trailer wiring connector), ensuring the connector is fully seated.
    12. Fig 5: Dash Rail Bolt
    GM962325Courtesy of GENERAL MOTORS CORP.
  12. Route the section of the body harness containing the relays along the dash panel rail. Install bolt (1) through the opening in the dash rail, through the relays and into the J-nut on the upper relay flange.

    Tighten:  Tighten bolt to 7 N.m (62 lb in).

  13. Locate the harness for the overhead clearance lamp, which is located near the top of the A-pillar above the headliner, and disconnect.
  14. Remove the drivers side front overhead marker lamp and bulb. Refer to Clearance Lamp Replacement (SUT Front)  or Clearance Lamp Replacement (SUT Rear)  or Clearance Lamp Replacement (SUV) .
  15. Remove the clearance lamp harness through the hole in the roof, being careful not snag or force harness out.
    16. Fig 6: Guiding Section Harness Containing 3 Wire Connectors
    GM962683Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Seat grommet properly in hole to insure a watertight seal. Failure to do so will cause water damage to the vehicle.
  16. Guide the section of the harness containing the 3 individual wire connectors down through the hole where the original harness was removed in step 9, and into the vehicle along the A-pillar.
    17. Fig 7: Wires & Marker Lamp Pocket
    GM962812Courtesy of GENERAL MOTORS CORP.
  17. Guide the remaining wires through the opening (1) the marker lamp pocket in the roof rail.
    18. Fig 8: Guiding Wires Into Connector
    GM962847Courtesy of GENERAL MOTORS CORP.
  18. Guide the wires into the connector. Once terminals are fully seated, close the retaining clip of the connector. Wires are to be placed in this order:
    • Opening A = Purple wire
    • Opening B = Black wire
    • Opening C = Red wire
  19. Insert connector into the connector from the light bar assembly.
  20. Re-install the clearance lamp, making sure to re-install the lamp bulb. Refer to Clearance Lamp Replacement (SUT Front)  or Clearance Lamp Replacement (SUT Rear)  or Clearance Lamp Replacement (SUV) .
    21. Fig 9: Connector Retention Clip
    GM963028Courtesy of GENERAL MOTORS CORP.
  21. Insert connector retention clip on the connector into the hole on the drivers' side lamp bar assembly stanchion.
    22. Fig 10: Roof Lamp Wire Connectors
    GM963035Courtesy 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:
    • Terminal 1= Blue Wire
    • Terminal 2= Yellow Wire
    • Terminal 3= Black Wire
  24. Install the overhead center console. Refer to Roof Console Replacement .
  25. Locate the harness connector for the overhead clearance lamp that was disconnected in step 15, and 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 side pillar garnish molding. Refer to Windshield Side Garnish Molding Replacement .
  29. Replace the sunshade. Refer to Sunshade Replacement .
  30. Operate lights and inspect for proper operation.
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