GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Body Repair 🢒 Collision Repair 🢒 Body Lock Pillar Inner Panel Sectioning Replacement

Removal Procedure

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

    Warning: Sectioning should be performed only in the recommended areas. Failure to do so may compromise the structural integrity of the vehicle and cause personal injury if the vehicle is in a collision.

  1. The body side inner panel is available in one piece. Sectioning must take place in specified areas only.

    2. Remove all related panels and components.

  2. Disable the SIR system. Refer to SIR Disabling and Enabling.
  3. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  4. Remove the sealers and anti-corrosion materials from the repair area, as necessary and note their location. Refer to Anti-Corrosion Treatment and Repair.
  5. Remove any structural foam as necessary from between the inner rocker panel and the lock pillar - inner. Refer to Structure Foam Replacement.
  6. Repair as much of the damaged area as possible. Refer to Dimensions - Body.

    7. Object Number: 1671622 Size: SH
  7. At the center pillar, locate the attachment slot (a).

    8. Object Number: 1671792 Size: SH
  8. From the top of the slot (a), measure up 25 mm (1 in). Scribe a line.

    9. Object Number: 1630785 Size: SH

    Note: Sectioning procedures can only take place in the straight areas of the inner body side panel.

  9. Create cut lines on the rocker panel within the approved sectioning locations as needed.
  10. Cut the panel at the inner center pillar where the lay out line was scribed.

    11. Object Number: 1671793 Size: SH
  11. Cut the panel at the rocker panel area where sectioning is to be performed, within the straight sections only.

    12. Object Number: 1671794 Size: SH
  12. Locate and drill out all factory welds. Note the number and location of welds for installation of the service part.
  13. Remove the damaged center pillar.

    14. Object Number: 1671798 Size: SH
  14. At the center pillar, measure 50 mm (2 in) up from the attachment slot to allow for a 50 mm (2 in) overlap.
  15. Notch the weatherstrip flange to prevent excessive metal thickness in these areas.
  16. In the front and rear door rocker areas of service part, scribe vertical cut lines to allow 50 mm (2 in) overlap of original cut lines on the vehicle.
  17. Drill 8 mm (5/16 in) plug weld holes every 40 mm (1 5/8 in) along the rocker overlaps, 25 mm (1 in) from the edge of the overlap. On the B-pillar, drill weld holes 10 mm (7/16 in) from the edge.
  18. Drill 8 mm (5/16 in) plug weld holes on the weld flanges as noted from original panel.

Installation Procedure

    Object Number: 1671799 Size: SH

    Note: Prior to refinishing, refer to publication GM4901M-2000 "GM Approved Refinish Materials" for recommended products. Do not combine paint systems. Refer to paint manufacturer's recommendations.

  1. Prepare mating surfaces.
  2. Prime the repair areas with two-part catalyzed primer.
  3. Clamp the part in position. Check for proper fit.
  4. Spot blast plug weld areas.
  5. Plug the weld as necessary.
  6. Stitch the weld along the sectioned areas.
  7. Finish the seams as necessary.
  8. Refinish as necessary.
  9. Install all related panels and components.