GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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


    Object Number: 1973978  Size: SH

    Important:  The service B-Pillar will come as a complete assembly and the center B-Pillar Reinforcement is constructed of ultra high strength steel (martensitic) and can not be sectioned. It can only be replaced as a one piece unit. A special sectioning procedure has been created. Refer to Body Lock Pillar Outer Panel Sectioning.

  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. 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. Object Number: 1973982  Size: SH

    Important: Note the number and location of the factory welds for installation of the inner pillar lock front door.

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

  8. Object Number: 1973983  Size: SH
  9. Remove the Center B-Pillar from the factory seams.

Installation Procedure


    Object Number: 1973985  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 in) apart.

  1. Drill 8 mm (5/16 in) plug weld holes in the service part as necessary in the corresponding locations noted on the original panel.
  2. Prepare all mating surfaces for welding as necessary.
  3. Apply GM approved Weld-Thru Coating or equivalent to all mating surfaces. Refer to Anti-Corrosion Treatment and Repair.

  4. Object Number: 1973986  Size: SH
  5. Position the service part on the vehicle using 3-dimensional measuring equipment. Clamp the part in place.
  6. Plug weld accordingly.