Windshield leak?

[fields_mj]

I've noticed a leak in the cab since I got my truck. The previous owner said there was one, but didn't say where. The drip would come out from under the end of the trim piece that runs along the top of the windshield on the pass side. I pulled that piece off, and also the piece that covers the A Pillar on the pass side, and the leak was coming in between the windshield and the sheet metal right where the two trim pieces overlap. It looks like theres a seam in the sheet metal there too, and the seal just isn't keeping the water out. It's a slow drip (every 10 sec if I'm in a car wash). Is there any way that I can fix this without removing the windshield?

Thanks,
Mark

 

[motox tech]

The only thing I can think to do is get a siringe(how ever thats spelled) take trim off and try to inject some silicone into the area. the problem is the metal gets so rusted under windshield, that the silicone may not stick. Especially on a seam! I just had my windshield replaced, they did it on site and the guy showed me how rusted the metal was before he cleaned it up, couple spots (on seams) he said he wished he was at his shop so he could clean it properly. but even if silicone doesnt bond, it may plug the void.

 

[fields_mj]

Thanks! I had thought of that, but I wasn't convinced that I could get the silicone to flow into that spot. I've still got the trim off the inside, so I may try that this weekend. I also thought about getting a tube of clear silicone caulking, and running a small bead between the windshield and the chorme trim along the top of the windshield. Problem there is adheasion over time, and where do I start and stop the bead? I figured I would have to run all the way down both sides of the windshield to try to keep air out from under the caulk. Otherwise, the wind would get under it and try to lift it out going down the highway, and then it would really look like crap.

 

[Dsl_Dog_Treat]

It's hard to tell form the pic in your sig, but does the truck have cab lights?
If so, you might look at the seals on those also as they do tend to degrade and get hard and brittle over time and will leak.
The seam may just be a low point to where the water has filled or moved to and is escaping.

If it is confirmed windshield, which sounds like the case, pop the exterior trim off and find a tube of butyl caulk and after cleaning the area, run a bead of caulk around in there to try and seal things up best you can.

 

[fields_mj]

Yes, I have confirmed that it is around the windshield. I figured it was one of the cab lights to begin with, but when I pulled the trim off the inside, and ran the hose over it, It turned out to be coming in around the windshield.

Thanks for the info! I figured that was butyl in there, but I wasn't certain. I'll look around and see if I can find any. Most of the stuff that I've had the misfortune to work with has either come in rolls like foam tape, or in solid blocks that have to be melted. Joy joy....

 

[RLDSL]

If you go to a glass shop they have a nice big gun with special sealer and a neat little tip that gets down in there that they can run around the thing in a couple of minutes. It's been a LOT of years since I've had this done so I won't venture to guess the current price, but it wasn't much when I had it done.