I have an 88 gmc sierra. I've replaced the fuel pump 3 times and each time the truck will run for a few minutes and then die. When. It dies I lose fuel and fire. So I figured it was electric issue. I'm kinda new to the mechanical world but have a little common sense. So I replaced the coil thinking maybe it could be that as I don't have the proper tools to diagnose. Tha didn't solve it, checked fuses and all looked good. Wires and plugs are new. I changed the ignition control module yesterday and still nothing just cant seem to get fire any ideas?