My windshield leaked after having it replaced. It was leaking somewhere from the upper driver's side corner. It would leak water down the inside of the plastic A-pillar trim piece down the drivers left kick-panel onto the floor. I had a devil of a time finding it. It would seem to be worse if it was parked pointing uphill, and almost never when it was pointed downhill.
It turned our it was leaking from one of the plastic clips that are inserted into the square holes in the roof above the windshield. With the truck angled uphill the recess for the upper trim piece forms a trench that catches and holds water, thus bathing the plastic clips and their associated holes. The plastic clip was one of the four that hold the windshield upper trim piece in place. Apparently when the trim piece is removed (forcefully pulled off) the clips get yanked partially out of the hole they are in. There is a thin rubber gasket under the clip that forms a water seal. If the clip is even slightly pulled out the seal is broken. In my opinion it's a poor design, but what do you do? We removed all the clips and reinstalled them with a pliable butyl rubber sealant. Since then no more leaks even with torrential rain and it parked pointed uphill.
If the upper windshield trim piece (Valence) gets removed the clips need to be checked to insure that they are pushed back into place. Sealing them with some type of pliable sealant would be good insurance in my opinion.
It turned our it was leaking from one of the plastic clips that are inserted into the square holes in the roof above the windshield. With the truck angled uphill the recess for the upper trim piece forms a trench that catches and holds water, thus bathing the plastic clips and their associated holes. The plastic clip was one of the four that hold the windshield upper trim piece in place. Apparently when the trim piece is removed (forcefully pulled off) the clips get yanked partially out of the hole they are in. There is a thin rubber gasket under the clip that forms a water seal. If the clip is even slightly pulled out the seal is broken. In my opinion it's a poor design, but what do you do? We removed all the clips and reinstalled them with a pliable butyl rubber sealant. Since then no more leaks even with torrential rain and it parked pointed uphill.
If the upper windshield trim piece (Valence) gets removed the clips need to be checked to insure that they are pushed back into place. Sealing them with some type of pliable sealant would be good insurance in my opinion.