GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 Terraza - 4WD 🢒 Body 🢒 Collision Repair 🢒 Center Pillar Replacement

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 in SIR.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

    3. Object Number: 865611 Size: SH
  3. Remove all related panels and components.

    4. Caution: Refer to Foam Sound Deadeners Caution in the Preface section.

  4. Restore as much of the damage as possible to factory specifications. Refer to Dimensions - Body .
  5. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair in Paint and Coatings.
  6. Remove the rocker panel. Refer to Rocker Panel Replacement .

    7. Object Number: 865616 Size: SH

    Important: Do not damage any inner panels or reinforcements.

  7. Locate and drill out all factory welds. Note the number and location of the welds for installation of the center pillar.

    8. Object Number: 865624 Size: SH
  8. Remove the damaged center pillar.

Installation Procedure

    Object Number: 865627 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 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. Object Number: 865632 Size: SH
  4. Position the center pillar.

    5. Object Number: 865637 Size: SH
  5. Plug weld accordingly.
  6. Install the rocker panel. Refer to Rocker Panel Replacement .
  7. Clean and prepare all 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 repair area. Refer to Basecoat/Clearcoat Paint Systems in Paint and Coatings.
  10. Install all related panels and components.
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  12. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.