Water leak inside cab

so I an 07 dcsb that i bought used a few years ago and I noticed a few month after I bought that when ever it rains the passenger side of the floor was wet. It wasn't that bad at first just a little damp. a quick wipe with a towel and within a few minutes the carpet was dry. But as time has gone by the problem has been progressively getting worse and now with the rain that just passed thru a few days ago the passenger side was soaked. Like some one had dumped a 5 gallon bucket of water in there. I took the seats and center console out to remove the carpet and didn't notice any damage to the floor, and all the plugs are there. So Im confused as to wear the water is coming from. If anyone else has had the same problem please let me know. its starting to get pretty annoying and I don't know what to do. If anyone has had this problem or may have an idea to what it is please let me know. thanks guys for any and all help

 

There's a TSB for that somewhere. I looked into it and thought it too involved to bother with. I just regularly check the cowling area by the wipers and under the hood at the top of the firewall for any debris such as leaves, pine needles, sticks etc to make sure all the drain holes are clear and I've not had the problem since.

 

http://www.customtacos.com/tech.old/files/tsb/BO00405r-05-Leak.pdf

 

I have a 09 access cab and had the same problem after a hard rain. Watch your blower motor, when mine leaked it soaked down the cabin filter, blower motor & housing. I pulled it all out, cleaned and dried everything & put it all back but could never pin point where it came in. I do the same as Tac0NooB,make sure the cowl is clean and nothing blocking the drains. Hasn't happened since. Good luck.

 

cool thanks guys