GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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

    Important: Before beginning the repair, refer to Metal Panel Bonding for proper adhesive applicator preparations and general information.

  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. Refer to Dimensions - Body .
  5. Remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .

  6. Object Number: 1818907  Size: SH

    Important: Note the number and location of the factory welds for installation of the rear end panel.

  7. Locate and drill out all the necessary factory welds.

  8. Object Number: 1818911  Size: SH

    Important: The rear end panel comes complete with reinforceents. The panel is shingled on last for easy access.

  9. Remove the rear end panel.

Installation Procedure


    Object Number: 1818915  Size: SH

    Important: If the location of the original plug weld holes can not be determined, space the plug weld holes every 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. Clean and prepare all mating surfaces as necessary.
  3. Important: Remove excess weld and sealer

  4. Apply GM-approved Weld-Thru coating or equivalent to all mating surfaces. Refer to Anti-Corrosion Treatment and Repair .

  5. Object Number: 1818918  Size: SH
  6. Position the rear end panel on the vehicle. Use 3-dimensional measuring equipment to inspect the panel.
  7. Clamp the panel in place.

  8. Object Number: 1818920  Size: SH
  9. Plug weld accordingly.
  10. Clean and prepare all of the welded surfaces.
  11. Install all of the related panels and components.
  12. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .
  13. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems .
  14. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  15. Enable the SIR system. Refer to SIR Disabling and Enabling .