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: 929784  Size: SH
  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.
  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. Important: Do not damage any inner panels or reinforcements.

  7. Locate and drill out all factory welds. Note the number and location of the welds for installation of the rear floor panel .
  8. Remove the damaged rear floor panel .

Installation Procedure


    Object Number: 929784  Size: SH

    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.

    Some panels may have structural weld-thru adhesive. It is necessary to replace the weld-thru adhesive with an additional spot weld between each factory spot weld.

  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 mating surfaces as necessary.
  3. Apply 3M Weld-Thru Coating P/N 05916 or equivalent to all mating surfaces.
  4. Position the rear floor panel to the vehicle using 3-dimensional measuring equipment. Clamp the rear floor panel into place.
  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 .