NDDan
Guest
You might have to get schematic out. I'd start at module. Find the two wires that go to spreader and see if you have 500+- ohms. If open circuit open right cab door and open side counsel. Find the proper plug and wires per schematic and check it there. And so on. You should be able to trace back until you locate the problem. Might just be the plug inside counsel door slipping apart on you. Good luck