GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    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.

  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: 870926  Size: SH
  4. Remove all related panels and components.
  5. Repair as much of the damaged area as possible. Refer to Dimensions - Body .
  6. 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: 870920  Size: SH

    Important: Do NOT section through any holes in the inner rocker panel.

  8. Measure from any key feature on the panel. Lay out the cut line location on the inner rocker panel reinforcement.
  9. Important: Note the number and location of the factory welds for installation of the inner rocker panel reinforcement.

  10. Locate and drill out all the necessary factory welds.
  11. Important: When you multi-layer sectioning areas in 2 or more panels, place the sectioning cut lines at least 100 mm (4 in) apart.

  12. Cut at the laid out cut line location.

  13. Object Number: 870919  Size: SH
  14. Remove the damaged portion of the inner rocker panel reinforcement.

Installation Procedure


    Object Number: 870923  Size: SH
  1. Measure and lay out the cut line on the service panel in the same location as the original panel.
  2. Cut the panel at the lines laid out in the previous step.

  3. Object Number: 870917  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.

  4. Drill 8-mm (5/16-in) plug weld holes in the service part as necessary in the corresponding locations noted on the original panel.
  5. Prepare all mating surfaces for welding as necessary.
  6. Apply 3M® Weld-Thru Coating P/N 05916 or equivalent to all mating surfaces.
  7. Drill 8-mm (5/16-in) plug weld holes in the inner rocker panel reinforcement at the cut line location and 10 mm (0.4 in) rearward of the edge of the panel.
  8. Cut a 100-mm (4-in) section of reinforcement from the unused section of the service part to be used as a welding backer. Trim as necessary to ensure a snug fit.

  9. Object Number: 870928  Size: SH
  10. Place the welding backer into the rocker panel backer reinforcement. Insert the welding backer about 50 mm (2 in), or about half-way.
  11. Clamp the welding backer in place and weld at the plug weld locations.

  12. Object Number: 870930  Size: SH
  13. Cut the outer center 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.
  14. Position the reinforcement to the vehicle. Clamp the reinforcement in place.
  15. Stitch weld along the sectioning area at the butt weld location. Make 25-mm (1-in) stitch welds with 25 mm (1 in) between each weld. Complete the stitch weld.

  16. Object Number: 870926  Size: SH
  17. Plug weld accordingly.
  18. Clean and prepare all of the welded surfaces.
  19. Install all of the related panels and components.
  20. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair in Paint and Coatings.
  21. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems in Paint and Coatings.
  22. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  23. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.