I have no idea how you're going to fix your problem but I would advise you don't come to Ca until your truck stops "leaking." The powers that be around here don't take too kindly about things that leak. Haz-mat is expensive! :E
We even have to tarp our paving machines when parked for the night. :E
I don't know about other brands but I have never seen power coating on any GM truck frame. About all I have seen is some super cheap drip coating..............if that. In fact a lot of my truck is bare metal; things like drive shaft, spindles, ect, ect, ect were bare metal right from the factory. :M Made me real happy when I did my fist oil change and saw rust everywhere on a new truck. :o