I havent seen this topic in any search. I recently noticed that I began getting a musty smell in my AV. I checked the midgate carpet and all dry. One day I was picking up something I dropped on the drivers carpet and noticed the carpet was wet under the mat. We hadnt had rain here for several weeks. The next couple of days I left my truck out in the sun with the windows down and the mat out. It dried out. Now I washed it last night and it rained today and the carpet is wet again! Any suggestions? I will check the drain tube from the front left corner of the sun roof. Anyone know if there is a condensation line for the A/C anywhere on the left of the firewall? I know there is one on the right side. It drains freely. The passenger front carpet is dry.