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: 866783  Size: SH
  4. Remove all related panels and components.
  5. Restore as much of the damage as possible to factory specifications. Refer to Dimensions - Body .
  6. Caution: Refer to Foam Sound Deadeners Caution in the Preface section.

  7. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .

  8. Object Number: 1688412  Size: SH
  9. Locate, mark, and drill out all factory welds attaching the rear rail.
  10. Remove the damaged rear rail.

Installation Procedure


    Object Number: 866813  Size: SH

    Important: If the location of the original plug weld holes can not be determined, or if structural weld-thru adhesive is present, space the plug weld holes every 40 mm (1 ½ in) apart.

  1. Drill 8 mm (5/16 in) plug weld holes along the rail. Locate these holes 13 mm (1/2 in) from the edge and spaced 40 mm (1 1/2  in) apart.
  2. Prepare all mating surfaces as necessary.
  3. Apply 3M® Weld-Thru coating P/N 05916 or equivalent to all mating surfaces

  4. Object Number: 866819  Size: SH
  5. Position the rear rail service part.

  6. Object Number: 1688412  Size: SH
  7. Plug weld accordingly.
  8. Clean and prepare all welded surfaces.
  9. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .
  10. Paint and repair the area. Refer to Basecoat/Clearcoat Paint Systems .
  11. Install all related panels and components.
  12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  13. Enable the SIR system. Refer to SIR Disabling and Enabling .