GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Vauxhall 🢒 2008 🢒 VXR8 🢒 Body Repair 🢒 Collision Repair 🢒 Roof Panel Replacement

Removal Procedure

    Caution: Refer to Approved Equipment for Collision Repair Caution in the Preface section.

    Caution: Refer to Foam Sound Deadeners Caution in the Preface section.

    Caution: Refer to Battery Disconnect Caution in the Preface section.

  1. Disable the SIR system. Refer to SIR Disabling and Enabling in SIR.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  3. Remove the windshield garnish moulding. Refer to Windshield Garnish Molding Replacement.
  4. Remove the inner rear quarter trim. Refer to Quarter Upper Trim Panel Replacement.
  5. Remove the inner upper centre trim. Refer to Body Hinge Pillar Trim Panel Replacement.
  6. Remove the overhead lighting panel. Refer to Dome Lamp Replacement.
  7. Remove the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.
  8. Remove the windshield. Refer to Windshield Replacement.
  9. Remove the rear window. Refer to Rear Window Replacement.
  10. Remove the roof weld moulding. Refer to Roof Weld Joint Reveal Molding Replacement.
  11. Visually inspect the damage. Repair as much of the damage as possible.
  12. Apply tape to the corners of the panels and adjacent surfaces.
  13. Remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.

    14. Object Number: 1939454 Size: SH

    Important: The roof panel is attached to the steel roof structure with beads of adhesive on the sides and spot-welds on the side rail, windshield and back-glass flanges. Replacement of the roof panel can be performed using conventional procedures, however, the windshield and back glass must be removed.

    Important: The roof outer panel is secured to the body side panel with adhesive and spot welds, it cannot be removed by cutting the spot welds alone.

  14. Locate, mark and drill all factory welds. Note the number and location of welds for installation of the service assembly.

    15. Object Number: 1937397 Size: SH

    Important: Take care when cutting to protect adjacent panels. Cut inboard of the roof structure.

  15. Using a suitable tool, cut through the roof outer panel along the inner side of the roof channel (1). Repeat for opposite side.

    16. Object Number: 1937384 Size: SH

    Important: Heating the 'anti-flutter' adhesive softens it making it easier to cut through.

  16. Heat the 'anti-flutter' adhesive between the roof panel and the roof bows (1).

    17. Object Number: 1937399 Size: SH

    Important: The 'anti-flutter' adhesive (1) is between the roof bows and the roof outer panel.

  17. Cut the 'anti-flutter' adhesive (1) with a suitable tool.
  18. Remove the roof outer panel from the vehicle.

    19. Object Number: 1937401 Size: SH
  19. Using a suitable tool remove the remaining strip of roof panel (1) from the body side ring. repeat for opposite side.

Installation Procedure

    Important: If the location of the original spot weld holes can not be determined, or if structural weld-thru adhesive is present, space the puddle weld holes every 32 mm (1¼ in).

    Important: Spot welding is the preferred method for attaching panels and should be used wherever possible. A puddle weld should be performed where your spot welder is unable to reach.

  1. Clean and prepare the attaching surfaces for welding.
  2. Clean the remaining anti-flutter adhesive from the front, centre and rear bow surfaces.
  3. Drill 8 mm (5/16 in ) puddle weld holes in the NEW roof outer panel in the locations to be puddle welded.

    4. Object Number: 1937402 Size: SH
  4. Apply two full beads of structural adhesive GM6449G or equivalent to the center bow (2).
  5. Apply a full bead of structural adhesive GM6449G or equivalent to the front and rear bows (1).

    6. Object Number: 1937404 Size: SH
  6. Apply structural adhesive GM6449G or equivalent to the mating surfaces of the roof panel and body side panel (1).
  7. Position the NEW roof outer panel to the vehicle.
  8. Inspect the fit.
  9. Clamp roof outer panel into correct position.

    10. Object Number: 1937383 Size: SH

    Important: Care must be taken to minimise the heat absorbed by the panel which could lead to panel distortion.

  10. Spot weld or puddle weld the roof outer panel on both sides using the same number of welds as per original build.
  11. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.
  12. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems.
  13. Install the roof weld moulding. Refer to Roof Weld Joint Reveal Molding Replacement.
  14. Install the rear window. Refer to Rear Window Replacement.
  15. Install the windshield. Refer to Windshield Replacement.
  16. Install the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.
  17. Install the overhead lighting panel. Refer to Dome Lamp Replacement.
  18. Install the inner upper centre trim. Refer to Body Hinge Pillar Trim Panel Replacement.
  19. Install the inner rear quarter trim. Refer to Quarter Upper Trim Panel Replacement.
  20. Install the windshield pillar moulding. Refer to Windshield Garnish Molding Replacement.
  21. Remove the tape to the corners of the panels and adjacent surfaces.
  22. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  23. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.
  24. If re-programming is required. Refer to Control Module References.

Roof Outer Replacement (With Sunroof) Removal Procedure

    Caution: Refer to Approved Equipment for Collision Repair Caution in the Preface section.

    Caution: Refer to Foam Sound Deadeners Caution in the Preface section.

    Caution: Refer to Battery Disconnect Caution in the Preface section.

    Important: Use care when cutting to protect adjacent panels. Cut inboard of the roof structure.

    Important: The roof panel is attached to the steel roof structure with beads of adhesive on the sides and spot-welds on the side rail, windshield and back-glass flanges. Replacement of the roof panel can be performed using conventional procedures, however, the windshield and back glass must be removed.

  1. Disable the SIR system. Refer to SIR Disabling and Enabling in SIR.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  3. Apply tape to the corners of the panels and adjacent surfaces.
  4. Remove the interior windshield garnish moulding. Refer to Windshield Garnish Molding Replacement.
  5. Remove the inner rear quarter trim. Refer to Quarter Upper Trim Panel Replacement.
  6. Remove the inner upper centre trim. Refer to Body Hinge Pillar Trim Panel Replacement.
  7. Remove the over head lighting panel. Refer to Dome Lamp Replacement.
  8. Remove the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.
  9. Remove the windshield. Refer to Windshield Replacement.
  10. Remove the rear window. Refer to Rear Window Replacement.
  11. Remove the roof weld moulding. Refer to Roof Weld Joint Reveal Molding Replacement.
  12. Remove the sunroof module. Refer to Sunroof Module Assembly Replacement.
  13. Remove the front sunroof drain hose. Refer to Sunroof Housing Front Drain Hose Replacement.
  14. Remove the rear sunroof drain hose. Refer to Sunroof Housing Rear Drain Hose Replacement.
  15. Visually inspect the damage. Repair as much of the damage as possible.
  16. Remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.
  17. Locate and mark all factory welds.

    18. Object Number: 1939453 Size: SH

    Important: The roof outer panel is secured to the body side panel with adhesive and spot welds, it cannot be removed by cutting the spot welds alone.

  18. Drill all factory welds. Note the number and location of welds for installation of the service assembly.

    19. Object Number: 1937397 Size: SH
  19. Using a suitable tool, cut through the roof outer panel along the side of the roof channel (1).

    20. Object Number: 1937445 Size: SH

    Important: Heating the 'anti-flutter' adhesive softens it making it easier to cut through.

  20. Heat the 'anti-flutter' adhesive between the roof panel and the rear roof bow (1).

    21. Object Number: 1939436 Size: SH
  21. Locate, mark, and drill out the factory welds (1) attaching the roof panel assembly to the body side rings.
  22. Remove the roof outer panel assembly from the vehicle.

    23. Object Number: 1937401 Size: SH
  23. Using a suitable tool remove the remaining strip of roof panel (1) from the body side panel.

Roof Outer Replacement (With Sunroof) Installation Procedure

    Important: If the location of the original spot weld holes can not be determined, or if structural weld-thru adhesive is present, space the puddle weld holes every 32 millimetres (1¼ in).

    Important: Spot welding is the preferred method for attaching panels and should be used wherever possible. A puddle weld should be performed where your spot welder is unable to reach.

  1. Clean and prepare the attaching surfaces for welding.
  2. Clean the remaining anti-flutter adhesive from the front, centre and rear bow surfaces.
  3. Mark the NEW roof outer panel with drilling locations, where puddle welding is necessary.
  4. Drill 8 millimetres (5/16 in ) puddle weld holes in the NEW roof outer panel in the locations to be puddle welded.

    5. Object Number: 1937446 Size: SH
  5. Apply a full bead of structural adhesive GM6449G or equivalent to the rear roof bow (1).

    6. Object Number: 1937448 Size: SH
  6. Apply structural adhesive GM6449G or equivalent to the mating surfaces of the roof panel and body side rings (1).
  7. Position the NEW roof outer panel assembly to the vehicle.
  8. Inspect for proper fitment.
  9. Clamp roof outer panel into correct position.

    10. Object Number: 1937443 Size: SH

    Important: Care must be taken to minimise the heat absorbed by the panel which could lead to panel distortion.

  10. Spot weld or puddle weld the roof outer panel on both sides using the same number of welds as per original build.
  11. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.
  12. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems.
  13. Install the upper rear sunroof drain hose. Refer to Sunroof Housing Rear Drain Hose Replacement.
  14. Install the front sunroof drain hose. Refer to Sunroof Housing Front Drain Hose Replacement.
  15. Install the sunroof module. Refer to Sunroof Module Assembly Replacement.
  16. If re-programming is required. Refer to Control Module References.
  17. Install the roof weld moulding. Refer to Roof Weld Joint Reveal Molding Replacement.
  18. Install the rear window. Refer to Rear Window Replacement.
  19. Install the windshield. Refer to Windshield Replacement.
  20. Install the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.
  21. Install the over head lighting panel. Refer to Dome Lamp Replacement.
  22. Install the inner upper centre trim. Refer to Body Hinge Pillar Trim Panel Replacement.
  23. Install the inner rear quarter trim. Refer to Quarter Upper Trim Panel Replacement.
  24. Install the interior windshield pillar moulding. Refer to Windshield Garnish Molding Replacement.
  25. Remove the tape to the corners of the panels and adjacent surfaces.
  26. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  27. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.
  28. If re-programming is required. Refer to Control Module References.