Hello everyone don't know how to go about fixing the problem. 2003, 1500, when it rains I get water coming in from under the dash on the passenger side. I can't see where it's going from but the carpet is soaked. any help on what to do or look for or who to bring it to dealer, auto glass place? Any help would be appreciated thanks Michael.

 

Do you have a sunroof ? Do you have cab roof lights ? Also check to make sure your hvac drain is open and not plugged.

 

I ran into the exact same issue with my 96. Turns out a foam seal under the hood had gone missing. It was located right below the windshield so when the hood closed, it formed a seal. Was just a little piece of foam about 4-5 inches long. I cut a piece of foam backer rod and glued it in and the problem went away. Might be a similar thing in your truck.

 

Thank you I will check that out. No sun roof or roof lights.