GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The support lower arm is joined to the front longitudinal and crossmember dash lower center. It forms the base for the front suspension and is maintaining the rigidity of the front parts. Pay particular attention to the position and dimensions of the weld joints and weld carefully.

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

  1. Disable the SIR system. Refer to Disabling the SIR System in SIR.
  2. Disconnect the negative battery cable.
  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 in Paint and Coatings.

  7. Object Number: 867533  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: 867535  Size: SH
  10. Remove the full rail.

Installation Procedure


    Object Number: 865235  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: 867533  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 in Paint and Coatings.
  9. Paint the repaired area. Refer to Basecoat/Clearcoat Paint Systems in Paint and Coatings.
  10. Install all of the related panels and components.
  11. Connect the negative battery cable.
  12. Enable the SIR system. Refer to Enabling the SIR System in SIR.