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: The quarter inner panel is replaced by sectioning the panel on to the vehicle and created from a complete body side inner panel service assembly.

  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. Object Number: 872409  Size: SH
  4. Remove all related panels and components.
  5. Repair as much of the damage as possible. Refer to Dimensions - Body .
  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 and Coatings.

  7. Object Number: 1548243  Size: SH
  8. Cut the upper sectioning joint (a).
  9. Cut the lower sectioning joint on the rocker panel area within the zones shown.

  10. Object Number: 1549805  Size: SH

    Important: Do not damage any inner panels or reinforcements.

  11. Locate and drill out all necessary factory welds within the areas of the quarter inner panel only. Note the number and location of the welds for installation of the inner quarter assembly.
  12. Remove the damaged quarter assembly.

Installation Procedure


    Object Number: 1548319  Size: SH
  1. For the sedan, cut the service panel at the top of the quarter inner panel portion of the service part (b). The sedan backer panel area used a 100 mm (4 in) weld backer.

  2. Object Number: 1548243  Size: SH
  3. For the coupe, cut the service panel in corresponding locations as on the original panel. Locations 3 and 4 use a 50 mm (2 in) weld backer.

  4. Object Number: 1551983  Size: SH
  5. Location 5 uses a 50 mm (2 in) weld backer. Location 6 at the rocker panel areas use a 100 mm (4 in) weld backer.
  6. Important: If the location of the original plug weld holes cannot be determined, space the plug weld holes every 40 mm (1½ in) apart.

  7. Drill 8-mm (5/16-in) plug weld holes in the service part as necessary in the corresponding locations noted on the original panel.
  8. Prepare all mating surfaces as necessary.
  9. Apply 3M® Weld-Thru coating P/N 05916 or equivalent to all mating surfaces.

  10. Object Number: 872411  Size: SH
  11. Position the inner quarter assembly to the vehicle. Clamp the assembly in place.
  12. Important: Filler, rear wheelhouse panel must be welded to the reinforcement assembly spare wheel carrier and the plate driver seat shoulder belt.

  13. Plug weld accordingly.
  14. Clean and prepare all of the welded surfaces.
  15. Install all of the related panels and components.
  16. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair in Paint and Coatings.
  17. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems in Paint and Coatings.
  18. Install all related panels and components.
  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.