02' P32 8.1L: being the 3rd vehicle off a ferry, RV just shut down at traffic light as I was coming to a stop. Fellow ferry people not Happy. six cop cars later, we tried to push 18,000 with no luck. Jacked all 4 off the ground all tires spun. Tried a to give it a pull, no dice!!!
Had to drop drive shaft, get wrecker.
Turns out when I used the brake at the light, the GREEN socket
on the steering column melted. Bad timing. Apparently this is a common problem with p-w chassis. There are service notes. Any workhorse dealer can add the relay system that prevents the ignition socket from overheating. Seems to be the heaviest red wire, which engages a seleniod for batteries. When it fries, the trans will lock-up?