By-passed GPC with the ground wire on a piece of 12-2 house wire. Truck started. When I had put the air-cleaner housing back on I had pinched a cable on top of the GPC. The rubber coating on the cable had been rubbed off in that spot and i think I shorted out the GPC unit. My bad. Wondering if this is useful information though:
Does this tell me that my GP's are fine since it would not start until I did the by-pass?