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

Warning: Refer to Glass and Sheet Metal Handling Warning 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.
4. Repair as much of the damage as possible to factory specifications. Refer to Dimensions - Body.

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

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.
6. Perform the necessary procedures to gain access to the repair. Refer to SIR Disabling and Enabling.




Note: Do not damage any inner panels or reinforcements.

7. Trim away the damaged rear wheelhouse to gain access to the weld flange.
8. Locate and drill out all factory welds. Note the number and location of the welds for installation of the outer rear wheelhouse.



9. Remove the damaged rear wheelhouse

Note: If the location of the original plug weld holes cannot be determined, or if structural weld-thru adhesive was present, space the plug weld holes every 40 mm (1 1/2 in) apart.

1. Drill 8 mm (5/16 in) plug weld holes in the service part, as necessary, in the service part in 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 rear wheelhouse to the vehicle.



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.