03 1500 Rebuilt 4.7 after spinning a bearing. After install ,I'm getting power to relay. But fuel pump won't turn on. I can jump across the relay and my fuel pump will run. Now if I pull the jumper after pressure up truck will start and run for a few seconds but then dies of course. If I leave the jumper in truck won't start. Pull the jumper start truck replace relay truck will die instantly. I'm guessing I'm not getting a ground signal from the ecm. Anyone have any ideas where to start to try and figure this out? It's kicking my ***.