Exterior "A" Pillar Sealing Procedures

Note:
The following procedures address potential waterleak locations along the "A" pillar. For all practical sealer applications, make sure that the areas to be sealed are dry, clean and free from debris and contaminants. A clear silicone sealer P/N 1052915 or equivalent should be used. It will not be necessary to remove prior sealers or paint over the clear sealers if a proper sealer application is performed.

1. Remove both wiper arms, air inlet grille (cowl screens) (reference 1996 Service Manual Sections 8E & 2B).





2. Plenum Extension Panel Joints to Plenum Upper Panel, Shear Wall and "A" Pillar Outer Panel (refer to Figure 3)

- Inspect and verify that the plastic seal retainers for the air inlet grille panel are fully seated in the Plenum upper body panel. If loose, clean area and reseal retainers. Inspect the shear wall and "A" pillar outer panel. Locate all voids, cracks and pits and seal appropriately.

3. Install plastic plug to cover the processing hole (refer to Figure 3, Item 3).





4. Windshield Urethane Adhesive (refer to Figure 4)

- The urethane adhesive may not have cured properly due to bead skips or air bubble voids. From each upper corner of the windshield, measure approximately 3 inches across the top of the windshield and mark with a grease pencil. Folding back the windshield reveal molding lip, apply a thin bead of clear sealer along the inner section next to the windshield at the top, as well as the entire length of each side of the windshield. Corners are most susceptible to leaks.

5. Roof Drip Rail Front Corners (refer to Figure 4)

- Inspect the front corners (approx. 3 inches) on both LH & RH side. Locate all voids, cracks and pits. Apply clear sealer to the top and bottom portion of this area.

6. LH & RH Secondary "A" Pillar Door Seal

- The secondary weatherstrip seal is attached by pressing pin retainers into "1A" pillar holes. These pins may not be seated properly. From the roof rail down to the end of the weatherstrip press all pins to ensure they are fully seated. If the pins do not seat properly, remove pin from hole and lightly pry the pin legs outward with a small screwdriver. When installing the retaining pins a slight "click" will be heard. No sealer will be necessary.

7. Reinstall the air inlet grille and wiper arms (reference 1996 Service Manual Sections 8E & 2B).

8. Install the GM Campaign Identification Label.