[larryflew]

Just an update without having done anything since the truck is in the shop for wheels and tires and getting it ready for winter travel.

I let it run for 5 minutes with ignition off and key out of the truck. At the end of 5 minutes pulled the 7 plug and truck stopped. Several times. 5th wheel was not hooked to the truck, just the wiring.

Truck back by Thursday and time for #1 son to get his Ice Castle out of storage so I'll hook to it and check it out as well as the other suggestions.

Thanks.

PS will certainly post when I actually find the problem.