Will not start after replacing Ignition Control Module and Ignition Coil

1999 GMC Savana 3500 Cutaway Box Truck. It was running rough and cut off while driving and check gauges light came on. Started back up and now fuel was low, I stopped at the gas station filled it up. Tried to crank it, it started then immediately cut off and was losing pressure so I couldn't press the gas to keep it started. Mechanic said it may be the fuel pump, but he heard it come on so he replaced the Ignition Control Module, the ignition coil, wires and spark plugs. The truck fired up and ran fine for a minute then it cut off. Now it won't start at all. Please help!