So it turns out, as someone suggested, the third brake light on my 2010 F-150 was leaking causing the moisture odor. I replaced the gasket and put a bead of silicon in it to take care of the leak. The real story though is the ozone generator I bought off of Amazon for $79.00. The detail shop wanted $60.00 for an ozone treatment so I figured it would just about be a wash. Anyway, I ran it in the truck for 30 minutes, with the truck all closed up and the a/c on high and recirculate. After that, I put it in the garage with the windows down and set a box fan in there on high to air out the ozone smell. That was Thursday and so far absolutely zero odor. Well worth the money.
