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. Important: This assembly is replaced at factory seams.

  4. Remove all related panels and components.
  5. Repair as much of the damage 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.

  7. Object Number: 1644890  Size: SH

    Important: Note the number and location of the factory welds for installation of the full rail service part.

  8. Locate and drill out all the necessary factory welds.

  9. Object Number: 1644891  Size: SH
  10. Remove the full rail.

Installation Procedure


    Object Number: 1644892  Size: SH

    Important: If the location of the original plug weld holes can not be determined, space the plug weld holes every 40 mm (1½ in) apart.

  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 full rail service part to the vehicle using 3-dimensional measuring equipment. Clamp the rail in place.

  5. Object Number: 1644890  Size: SH
  6. Plug weld accordingly.
  7. Clean and prepare all of the welded surfaces.
  8. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair.
  9. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems.
  10. Install all of the related panels and components.
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  12. Enable the SIR system. Refer to SIR Disabling and Enabling.