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 .
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

  3. Object Number: 1945678  Size: SH
  4. Remove all related panels and components.
  5. Restore as much of the damage as possible.
  6. Remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .

  7. Object Number: 1945705  Size: SH
  8. Remove the body inner reinforcement.

  9. Object Number: 1945706  Size: SH

    Important: Do not damage any inner panels or reinforcements.

    Important: Note the number and location of the factory welds for installation of the inner quarter panel.

  10. Locate, mark, and drill out all the necessary factory welds.
  11. Use a panel cutter to remove the three hidden welds under the upper reinforcement. These welds connect the outer wheelhouse to the inner wheelhouse (A).


    Object Number: 1945708  Size: SH
  12. Remove the damaged wheelhouse.

Installation Procedure

    Important: If the location of the original plug weld holes can not be determined, 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 wheelhouse as necessary in the locations noted from the original panel.
  2. Prepare all mating surfaces as necessary.
  3. Apply Weld-Thru Coating to all mating surfaces. Refer to Anti-Corrosion Treatment and Repair

  4. Object Number: 1945709  Size: SH
  5. Align the service part on the vehicle using 3-dimensional measuring equipment.

  6. Object Number: 1945711  Size: SH
  7. Plug weld accordingly.

  8. Object Number: 1945708  Size: SH
  9. In the upper reinforcement area replace the three hidden spot welds with three 25 mm (1 in) stitch welds (A).

  10. Object Number: 1945715  Size: SH
  11. Install the body inner reinforcement.
  12. Clean and prepare all of the welded surfaces.
  13. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .
  14. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems .
  15. Install all of the related panels and components.
  16. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  17. Enable the SIR system. Refer to SIR Disabling and Enabling .