Center Pillar Replacement Outer

1. Remove all related panels and components including the front door.
2. Position all wiring out of the way to prevent damage.
3. Visually inspect and restore as much of the damage as possible to factory specifications.
4. Remove sealers and anti-corrosion materials as necessary.



5. On the original outer door frame (2), measure down from the lower edge of the door opening 200 mm (8 in) and mark a horizontal line.
6. Cut the outer door frame along this line for sectioning.
7. Locate, mark, and drill out all necessary factory welds. Note the number and location of welds for installation of the service section.
8. Perform additional sectioning procedures as necessary to remove the center lock pillar.
9. Remove the damaged section (4) of the door frame opening.

1. On the service part, mark a horizontal line to leave a gap of 1½ times the thickness of the metal (5) at the sectioning joint.
2. Cut the service panel along this line.
3. Drill 8 mm (5/16 in) holes for plug welding in the service part in the locations noted from the original panel.
4. Drill holes for plug welding along the sectioning cuts on the service part.
5. Locate these holes approximately 13 mm (1/2 in) from the edge of the sectioning cuts.
6. Prepare the mating surfaces and position the service part using 3-dimensional measuring equipment.
7. Plug weld accordingly.
8. Use the inner reinforcement (3) as a backing plate and stitch weld along the entire sectioning joint.
9. Make 25 mm (1 in) welds along the seam with 25 mm (1 in) gaps between.
10. Go back and complete the stitch weld. This will create a solid joint with minimal heat distortion.
11. Complete all other welds and sectioning procedures as necessary.
12. Clean and prepare welded surfaces.

Important: Prior to refinishing, refer to GM P/N 4901MD-99 Refinish Manual for recommended products.

13. Prime with 2-part catalyzed primer.
14. Apply sealers and anti-corrosion materials as necessary.
15. Install all related panels and components.