GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The hinge pillar-front area is the part of the frame door opening panel. It's connected to the roof, windshield, door hinges and floor frame and is important as a support for the front side of the cabin. Connection of the hinge pillar-front determines the position of the windshield and front door. Align the fender, door and windshield while the hinge pillar-front is temporarily mounted, and check the clearance and level differences.

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

Caution: Sectioning should be performed only in the recommended areas. Failure to do so may compromise the structural integrity of the vehicle and cause personal injury if the vehicle is in a collision.


Object Number: 874221  Size: SH

The sedan body side outer panel is available either in one piece or in front or rear portions. The front and the rear halves are cut about half way across the rear door opening. You can perform any one of these replacement procedures separately or in any combination, depending upon the extent of damage to the vehicle. Sectioning must take place in specified areas only. Stay away from the door and window opening radius areas. Section only in straight areas of the openings.


Object Number: 874304  Size: SH

The coupe body side outer panel is available as a one-piece panel only. You can perform any one of these replacement procedures separately or in any combination, depending upon the extent of the damage to the vehicle. Sectioning must take place in specified areas only, (1) (2) (3) (4). Stay away from the door and window opening radius areas. Section only in straight areas of the openings.

  1. Disable the SIR system. Refer to SIR Disabling and Enabling .
  2. Disconnect the negative battery cable.
  3. Remove all related panels and components.
  4. Repair as much of the damaged area 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. Important: Sectioning can be done anywhere in the straight areas of the windshield pillar and along the rocker panel.

  7. Locate the area on the panel where sectioning will be performed.

  8. Object Number: 876965  Size: SH
  9. Measure from any trim attachment hole within the recommended sectioning areas. Mark the location for section cutting on the vehicle at the windshield pillar and rocker panel locations.
  10. Important: Note the number and location of the factory welds for installation of the hinge pillar.

  11. Locate and drill out all factory welds.
  12. Important: Do NOT damage any other panels or reinforcements when cutting at the marked locations.

  13. Cut the panel at the location laid out in the previous steps.

  14. Object Number: 876966  Size: SH
  15. Remove the damaged hinge pillar.

Installation Procedure

  1. Locate the area on the service panel where you will perform sectioning.
  2. Measure and mark the cut line location on the service part at the same location as on the vehicle layout.

  3. Object Number: 876964  Size: SH
  4. Cut the outer front hinge pillar in corresponding locations to fit the remaining original panel. The sectioning joint should be trimmed to allow a gap of 1½ times the metal thickness at the sectioning joint.

  5. Object Number: 876967  Size: SH
  6. Create a 50 mm (2 in) backing plate from the unused portion of the service part for the windshield area.
  7. Create a 100 mm (4 in) backing plate from the unused portion of the service part for the rocker area.
  8. Trim the backing plates as necessary to fit behind the panel at the sectioning joint.
  9. 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.

  10. Drill 8 mm (5/16 in) plug weld holes along the sectioning area in the service part, and at the locations noted from the original panel.

  11. Object Number: 876968  Size: SH
  12. Prepare all mating surfaces as necessary.
  13. Apply 3M Weld-Thru Coating P/N 05916 or equivalent to all mating surfaces.
  14. Fit the backing plates halfway into the sectioning joints, 25 mm (1 in) at the windshield pillar and 50 mm (2 in) at the rocker panel areas. Clamp the plates in place, and plug weld to the section joint.
  15. Position the outer front pillar to the vehicle using 3-dimensional measuring equipment. Clamp the pillar in place.
  16. Plug weld accordingly.

  17. Object Number: 787665  Size: SH
  18. Plug weld accordingly.
  19. Stitch weld the butt weld locations.
  20. To create a solid weld with minimum heat distortion, make a 25 mm (1 in) stitch weld along the seam with gaps of 25 mm (1 in). Go back and complete the stitch weld.
  21. Clean and prepare all of the welded surfaces.
  22. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .
  23. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems .
  24. Install all of the related panels and components.
  25. Connect the negative battery cable.
  26. Enable the SIR system. Refer to SIR Disabling and Enabling .