ORIGINAL: robrtx

Martin,

By all accounts wet passenger side floor boards appear to be a common occurence in Gen II Dakotas and from reading and researching as well as my own observations, these are some conclusions that I have come to with regards to the source(s) :

1. Pinched or clogged A/C condenser drain (previously mentioned). This is a small drain line that protrudes on the passenger side firewall and is sometimes hard to see. Some people have had success fabricating an elbow for this to direct it downwards instead of horizontally as it currently is to help prevent it from becoming clogged. If you see water draining from this on a hot day while using your A/C though, this may not be the culprit.

2. The heater box penetration where it goes through the firewall (below windshield on passenger side under windshield wiper). Without tearing your whole dashboard apart you can sometimes get to this by removing the windshield wiper arms, and the plastic shrowd under the wipers at the bottom of the windshield. The foam gasket around the heater box penetration seems to dry out and leak. I reached in and siliconed around mine.

3. Leaky gasket around rear side window(s) on club cab.

4. Leaky gasket around back window.

5. Body seam not properly sealed on right side of cab below rear window.

What I did was take out a lot of the interior trim, fold up carpet and pad, and run water from a garden hose over the suspected trouble spots while someone spotted for water inside the truck. After you locate, you can attempt to seal yourself with silicone or bring to a glass place or body shop to seal. The rear window and side window really threw me and took awhile to track down because I wanted to believe that the water was only coming in from the front under the dash. My truck was leaking from 2, 3, and 4 above.

To dry the carpet and padding, you may want to remove from truck and leave out to dry on a sunny day depending on your situation. This may be a good idea anyways until you are certain that you have located and corrected the source(s) of the water. .........or, you can be lazy like me and wring as much water out as you can and sop up with a sponge and a wet vac. Then fold up carpet and padding as best you can on the passenger side without taking front seats out. You'll need to remove some of the trim and maybe the rear seats (I'm not familiar with the quad set up). Leave the door(s) open on a sunny day(s) with the sun beating in. I also stuck the end of a small leaf blower up under the carpet to expedite..........this may take awhile and works best if you have another vehicle to use during the process.

I hope that this is of some use to you.

Regards,
Bob