Had it towed home and let it sit for two days. It would crank over, but would not start. I whacked the front gas tank with a 2X6 and the truck started up. I moved it to the normal parking spot and turned it off. It refuses to run, even though the battery is good, the front fuel tank is full, the rear is 1/2 full, no codes or alarms on the message center, no fuel to the injector header, all fuses good, fuel relay good, and no visual problems with the wiring. It cranks fine, but continues cranking sometimes for a few seconds with the key off. This is my third Chevy truck

and it is my last.