APU leaking fuel

Pull the top cover off and look. It should be plumbed into the tank nearest to it, so just follow the lines.
These new trucks are pretty smart. Depending on the ecm settings you might be able to fool the ambient air temp sensor, but I don’t know where it’s located.
@Goodysnap

 

Try a stick on the throttle pedal just above low idle. Try leaving the tractor parking brake released.
Tie a piece of wire tied across the coat hangers or something on each side. Hang a one gallon metal bucket in the middle. Put charcoal in it. When it is cooling off trough a few more brickets in the bucket. I was not there but they said a man came home like this. His heater knocked off and he made it home for Christmas. They said he looked like a raccoon. The only thing left white was the rings around his eyes. Not recommended but he but he did not freeze to death.