I've been having a small amount of water underneath the driver seat after hard rainfall. I noticed I had a chunk of my exterior window seal missing and was thinking I was getting water leaking in through the door somehow. Anyone have experience with this seal going bad, and if so did it cause a interior cab leak? Here's a picture of the seal I'm talking about, but on the driver side.

 

both of mine are missing because I am stripping it ready for paint. my inside gets very damp too. you should replace the seal man.