GM Service Manual Online
For 1990-2009 cars only

Off Road Lamp Replacement Base

Removal Procedure


    Object Number: 963035  Size: SH
  1. Remove the sunshade.
  2. Remove the windshield pillar garnish molding. Refer to Windshield Pillar Garnish Molding Replacement in Interior Trim.
  3. Disconnect the body harness roof lamp wire connectors (1).
  4. Remove the overhead console. Refer to Roof Console Replacement in Interior Trim.
  5. Remove the power switch nut.
  6. Remove the power switch.

  7. Object Number: 963028  Size: SH
  8. Remove the connector retention clip from the hole in the driver's side lamp bar assembly stanchion.
  9. Remove the clearance lamp bulb and the clearance lamp. Refer to Clearance Lamp Replacement .

  10. Object Number: 962812  Size: SH
  11. Remove the wires through the opening (1) in the marker lamp pocket in the roof rail.

  12. Object Number: 962325  Size: SH
  13. Remove the bolt (1) in the opening in the dash rail from the J-nut on the upper relay flange, and remove the relays.

  14. Object Number: 962277  Size: SH
  15. Disconnect the section of harness connected to the Z82 location of the MidBec, trailer wiring connector, and remove.

  16. Object Number: 961578  Size: SH
  17. Remove the body harness containing the 3 wires through the overhead console opening through the headliner down the windshield pillar.

  18. Object Number: 961317  Size: SH
  19. If equipped, remove the luggage carrier roof rails. Refer to Power Roof Systems Component Views in Roof.
  20. Remove the lamp bar assembly with the lamps installed, out of the roof from the openings in the roof rails.

  21. Object Number: 953754  Size: SH
  22. Disconnect the lamp electrical connectors from the retainers (2) on the back of the lamp stanchions.
  23. Remove the lamps from the U-brackets (3) of the lamp bar assembly.

Installation Procedure


    Object Number: 953754  Size: SH
  1. Install the lamps into the U-brackets (3) of the lamp bar assembly.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the bolts (1) through the U-brackets and the lamps.
  4. Tighten
    Tighten the bolts to 15 N·m (11 lb ft).

  5. Connect the lamp electrical connectors (2), and snap the connectors into the retainers on the back of the lamp stanchions (3).
  6. If equipped, remove the luggage carrier roof rails. Refer to Luggage Carrier Replacement .


    Object Number: 961317  Size: SH
  7. Guide the lamp bar assembly, with the lamps installed, onto the roof through the openings in the roof rails.
  8. If equipped, replace the luggage carrier roof rails. Refer to Power Roof Systems Component Views in Roof.

  9. Object Number: 961578  Size: SH
  10. Install the lamp covers.
  11. Remove the overhead console. Refer Roof Console Replacement in Interior Trim.
  12. Remove the windshield pillar garnish molding. Refer to Windshield Pillar Garnish Molding Replacement in Interior Trim.
  13. Remove the sunshade. Refer to Sunshade Replacement in Interior Trim.
  14. 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.

  15. Object Number: 962277  Size: SH
  16. 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.

  17. Object Number: 962325  Size: SH
  18. 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.
  19. Tighten
    Tighten bolt to 7 N·m (62 lb in).

  20. Locate the harness for the overhead clearance lamp, which is located near the top of the A-pillar above the headliner, and disconnect.
  21. Remove the drivers side front overhead marker lamp and bulb. Refer to Clearance Lamp Replacement .
  22. Remove the clearance lamp harness through the hole in the roof, being careful not snag or force harness out.

  23. Object Number: 962683  Size: SH

    Important: Seat grommet properly in hole to insure a watertight seal. Failure to do so will cause water damage to the vehicle.

  24. 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.

  25. Object Number: 962812  Size: SH
  26. Guide the remaining wires through the opening (1) the marker lamp pocket in the roof rail.

  27. Object Number: 962847  Size: SH
  28. 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:
  29. • Opening A = Purple wire
    • Opening B = Black wire
    • Opening C = Red wire
  30. Insert connector into the connector from the light bar assembly.
  31. Re-install the clearance lamp, making sure to re-install the lamp bulb. Refer to Clearance Lamp Replacement .

  32. Object Number: 963028  Size: SH
  33. Insert connector retention clip on the connector into the hole on the drivers' side lamp bar assembly stanchion.

  34. Object Number: 963035  Size: SH
  35. 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.
  36. 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:
  37. • Terminal 1= Blue Wire
    • Terminal 2= Yellow Wire
    • Terminal 3= Black Wire
  38. Install the overhead center console. Refer to Roof Console Replacement in Interior Trim.
  39. 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.
  40. Once the wires have been routed under the dash, locate the connectors on the body harness.
  41. 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.
  42. Replace the windshield pillar garnish molding. Refer to Windshield Pillar Garnish Molding Replacement in Interior Trim.
  43. Replace the sunshade. Refer to Sunshade Replacement in Interior Trim.
  44. Operate lights and inspect for proper operation.

Off Road Lamp Replacement Low Profile

Removal Procedure


    Object Number: 1677281  Size: SH
  1. On the sport utility vehicle (SUV), locate the plastic covers (1) toward the rear end of the roof rack side rails.
  2. Using a flat-bladed tool, remove the covers from both rear side roof rack side rails.

  3. Object Number: 1677287  Size: SH
  4. On the sport utility truck (SUT) vehicle, locate the roof clearance lamps toward the rear end of the roof rack side rails.
  5. Remove the screws (1).
  6. Using a flat-bladed tool, remove the clearance lamp lens covers (2) from both rear side roof rack side rails.
  7. Disconnect the lamp sockets (3) from the clearance lamp lens covers.
  8. Remove the screws (1) securing the stanchions to the roof side rails.
  9. Disengage the locating clips and remove the stanchions (2).

  10. Object Number: 1677298  Size: SH
  11. On vehicles equipped with cross bars, loosen the lock knobs at each end of the cross bar in order to slide the cross bar and remove the cross bar from the roof rack side rails.
  12. Slide the cross bar towards the rear of the vehicle and remove where the roof clearance lamps were located.
  13. Repeat the removal process for vehicles equipped with more than one cross bar.

Installation Procedure


    Object Number: 1677305  Size: SH
  1. Position the new roof mounted off road lamp bar assembly (1) to the openings where the roof clearance lamps were mounted.
  2. Slide the lamp bar assembly in the roof rack side rails all the way forward to the third detent position from the front of the rails.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Tighten the lamp bar assembly lock knobs.
  5. Tighten
    Tighten the lamp bar assembly locking knobs to 7 N·m (62 lb in).


    Object Number: 1677309  Size: SH
  6. Position the cross bar (2) into the roof rack side rails.
  7. Slide the cross bar to the lamp bar assembly (1).
  8. Tighten the cross bar assembly lock knobs.
  9. Tighten
    Tighten the cross bar assembly locking knobs to 7 N·m (62 lb in).


    Object Number: 1677314  Size: SH
  10. Install the plastic covers (1) inside the roof rack side rails.

  11. Object Number: 1677384  Size: SH
  12. Position the roof marker lamp stanchion to the roof.
  13. Pull the electrical light harness through the opening in the stanchion.
  14. Secure the locking tab.
  15. Install the screws (2).
  16. Tighten
    Tighten the screws to 5 N·m (44 lb in).


    Object Number: 1677386  Size: SH
  17. Install the lamp socket (1) to the clearance lamp lens cover (2).
  18. Install the screws (3).
  19. Install the lens cover screws (3).
  20. Tighten
    Tighten the lens cover screws to 2.5 N·m (22 lb in).


    Object Number: 1677391  Size: SH
  21. Install the lamp lens covers (1) to the lamp bar assembly lights (2).

  22. Object Number: 1677395  Size: SH
  23. Locate the roof lamp electrical harness located on the driver's side of the vehicle.
  24. Connect the lamp bar assembly electrical connector (1) to the body harness electrical connector (2).

  25. Object Number: 1677396  Size: SH
  26. Secure the electrical connection (1) to the lamp bar assembly frame (2).
  27. Important: Remove the lamp lens covers prior to lamp operation.

  28. Inspect and verify the lamp bar operation.