GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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


    Object Number: 1847261  Size: SH

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

  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. Remove the fuel tank. Refer to Fuel Tank Replacement in Engine Controls.
  4. Remove all related panels and components.
  5. Repair as much of the damage as possible to factory specifications.
  6. 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/Coatings.

  7. Object Number: 1847267  Size: SH
  8. Locate, mark, and drill out all factory welds attaching the rear window panel assembly (2),rear seat back panel extension (1) and the rear floor panel assembly (3).

  9. Object Number: 1847270  Size: SH
  10. Cut the rear window panel assembly inboard of the join to the rear seat back extension assembly with a cutting tool along line (1).

  11. Object Number: 1847272  Size: SH
  12. Remove the remaining portion of the rear window panel assembly (1), (2) and the layer of adhesive below as required.

Installation Procedure


    Object Number: 1847278  Size: SH
  1. Clean and prepare the mating surfaces.
  2. Verify for proper fit of the rear rail underbody assembly.
  3. Drill 8-mm (5/16-in) plug weld holes on the service assembly, as necessary, in the locations noted from the original assembly.
  4. Apply 3M® Weld-Thru coating P/N 05916, or equivalent, to all mating surfaces.
  5. Position the service assembly.
  6. Verify the fit with 3 dimensional measuring equipment. Refer to Dimensions - Body.
  7. Important: 

       • Installation is best performed with the aid of an assistant.
       • The adhesive has a 40-50 minute working time. Do not allow the panel to totally cure off the vehicle, as proper alignment of the panel to the vehicle will be difficult.

  8. Apply metal panel bonding adhesive GM P/N 12378566/7 (Canadian P/N 88901674/5), or equivalent, to the areas shown.
  9. Clamp the panel into position.

  10. Object Number: 1847281  Size: SH
  11. Plug weld the rear window panel assembly to the rear quarter panel and rear seat back extension.

  12. Object Number: 1847307  Size: SH
  13. Plug weld the rear window panel assembly (2) to the rear seat back panel extension assembly (1) and the rear floor panel assembly (3).
  14. Clean and prepare all welded surfaces.
  15. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair in Paint/Coatings.
  16. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems in Paint/Coatings.
  17. Install all related panels and components.
  18. Install the fuel tank. Refer to Fuel Tank Replacement in Engine Controls.
  19. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  20. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.