Water on my floor

[Christopher Rigby]

I have recently discovered that my rear seating area has had water all over the floor under the mat :angry:. The truck stays parked inside my garage most of the time, and when it is outside or when I drive through the rain, I see no evidence of leakage in the ceiling or anywhere else like I did when I had an F-150 and Ranger. I pulled the seats out and pulled the mat forward to expose puddles of water in some places and beads of water everywhere else. It's not anywhere in the front...only in the rear seating:btddhorse:. Thoughts?

 

[EddieS'04]

Rear high mount brake light gasket. Seeping and running down the wall behind the liners.

 

[Les]

What Eddie said, tighten the 3rd brake light.