I skimmed thru the tread so please excuse me if this is redundant. After you've fixed the source, the real work is removing all all the trim and seals to lift up the carpet and all the wiring, so that you can properly allow the truck to dry. I had same issue, (clogged drains) removed/lifted up the Dr side carpet, stuck small blocks of wood to keep it up and ran a large dehumidifier in the truck for about a week. Even after I used towels to remove the standing water, and dry as much as I could, I still pulled about 1/2- 1gl of water out with the dehumidifier over the period of a week.