2nd Gen Non-Engine/Transmission Water Infiltration in Cab of 94

[ACramer]

I am having problems with water infiltrating the cab of my 94 RAM 2500. I have pulled seat and carpet out (it was soaked). Floor boards have rust on both sides, passenger and driver. When it rains I can see a small trickle appearing on the passenger side down where the floor pan attaches to the rocker panel. Truck is sitting now so that it is leaning toward the passenger side.

Anyone had this problem in the past and found a solution. I don't want to put carpet and seat back in until I can resolve where the water is coming from.

 

[ata]

I'll bet the water is coming around the thrid brake light on the back of the cab. The gasket is a really weak thing that has caused a lot of problems. Some people just use silicone, some use two gaskets. I used one gasket and a real light coating of silicone on both sides. Hope this helps. Also the slider window lower track has drain holes make sure they are clear also.

 

[ACramer]

Thanks. I'll pull the light out and add some silicone and see what happens.

 

[edgeman]

I also had water in my cab. I resealed the stop lamp and had to seal the back window as well, this fixed the problem. Hope this helps.

 

[Texis]

My 97 kept wetting the pass side every time it rained. I ending up caulking around the oval shaped floor pan drains that are permantely secured on the under side of the floor panel. The looked fine, but after the caulking... the wetting stopped, that was 2 years ago and it's still dry.



The AC drain hole can also cause this. Mine was letting rain come in around the AC condensate drain. I cut a 2" dia x 1/4" thick round piece of neoprene, polked a hole in the middle for the hose to pass through and glued it flush (outside the cab of course) This stopped another one of the leaks.



Good luck, leaks can be frustrating to track down.

 

[SRath]

After removing my soaked carpet long ago, I waited until a big t-storm came and just sat and watched for the water. It ran like a river down both sides of the rear cab.

The little body channel above each door runs right into and under the rear window gasket. Stupidest thing I ever saw... Like deliberately running your house's downspouts directly to the basement wall footing instead of away from it. And that kollege edicated injuneer makes more money than me?!!

I used polyurethane instead of silicone on both the rear window and the 3rd brake light AND discovered the vinyl trim piece in that drain channel was almost falling off and reglued it with the polyurethane, too. I was very generous at the junction where it intersects the window gasket.

We won't even talk about how all the water that gets past those channels is directed into the door gasket at its weakest sealing point overhead... You know: the place all the wind whistles through because it doesn't seal worth a hoot. It doesn't keep water out any better.

The reason the underside of your carpet is rubberized is not to keep the floor from getting wet, it is to keep it from ever getting dry!

Bring back rain gutters and vent windows!!! #@$%!

When I drove for Yellow Freight, it would sometimes be raining when doing freight P&D and many of those crappy old trailers have numerous holes in the roofs from sloppy forklift operators. Usually "patched' with a self-adhesive HazMat placard or aluminum tape... I would tell the concerned-looking customer "Don't worry, the holes in floor are even bigger; it will drain right through eventually. "

 

[surfbeetle]

Clearance lights leak, the rear window leaks and the third brake light leaks. I have experiences all of these. When I had my sleeper installed, I shaved the third brake light and had the truck painted since there's a third brake light on the sleeper. I figure with the sleeper add on, I eliminated the rear window and the third brake light leaks. BTW, the rear window on the sleeper is from a 1st gen Dodge as that's the hole pattern cut into the rear for the window.



I am intrigued by Texis' "oval shaped floor pan drains", I'll have to get under there and look for them. Are they under the cab or at the rear? I can't seem to picture them right now.