GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: Refer to Approved Equipment for Collision Repair 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 in Engine Electrical.

  3. Object Number: 827981  Size: SH
  4. Remove all related panels and components.
  5. Caution: Refer to Foam Sound Deadeners Caution in the Preface section.

  6. Restore as much of the damage as possible to factory specifications.
  7. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair in Paint and Coatings.

  8. Object Number: 827983  Size: SH

    Important: Do not damage any inner panels or reinforcements.

  9. Locate and drill out all factory welds. Note the number and location of the welds for installation of the roof panel.

  10. Object Number: 827984  Size: SH
  11. Remove the damaged roof panel.

Installation Procedure


    Object Number: 742024  Size: SH

    Important: In any area damaged beyond recognition, or structural weld thru adhesive was present, space the plug weld holes 40 mm (1½ in) apart.

  1. Drill 8 mm (5/16 in) plug weld holes in the service part as necessary in the locations noted from the original panel.
  2. Prepare all attachment surfaces as necessary.

  3. Object Number: 827985  Size: SH
  4. Apply 3m weld-thru coating P/N 05916 or equivalent to all mating surfaces.
  5. Position the roof panel.

  6. Object Number: 831873  Size: SH
  7. Plug weld accordingly.

  8. Object Number: 831875  Size: SH
  9. Clean and prepare all welded surfaces.
  10. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair in Paint and Coatings.
  11. Paint the repair area. Refer to Basecoat/Clearcoat Paint Systems in Paint and Coatings.
  12. Install all related panels and components.
  13. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  14. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.