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

1. Disable the SIR system. Refer to SIR Disabling and Enabling .
2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .



3. Remove all related panels and components.

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

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




Important: Do not damage any inner panels or reinforcements.

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



7. Remove the damaged roof panel.

Important: In any area damaged beyond recognition, or structural weld thru adhesive was present, space the plug weld holes 40 mm (1.5 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. Apply GM-approved weld thru coating or equivalent to all mating surfaces. Refer to Anti-Corrosion Treatment and Repair .
4. Position the roof panel.



5. Plug weld accordingly.



6. Clean and prepare all welded surfaces.
7. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .
8. Paint the repair area. Refer to Basecoat/Clearcoat Paint Systems .
9. Install all related panels and components.
10. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
11. Enable the SIR system. Refer to SIR Disabling and Enabling .