Scott,can you can borrow a scan tool and plug into the truck.See if it will communicate with the ecm,if it does see if you get an rpm signal while cranking,this will tell you if the crank sensor is sending a signal.If the scanner doesn't communicate with the ecm you'll need to start looking into possibly wiring,power feed problems or maybe a smoked ecm.One quick check,does the check engine lite come on when you turn the key on? John.