Part #68053288AC. FSM indicates that this thing must have VIN stored. Does this mean that if I install it I have to have dealer program it? And, BTW, it appears to be just about impossible to service this thing where it's located buried next to a frame rail above the engine crossmember. Any trick to get to it other than to cut the frame rail out with a torch and scrap the car? FSM just says to unplug the connector to diagnose. I can't see any way to get enough room to unplug the connector. ???