I have replaced the fuel pump in my wife's 1999 Suburban, along with the fuel pump relay (thinking that was the original problem) and a new fuel filter. I can hear the pump prime up when the truck in turned on. I went through the process to let the system re-pressurize and attempted to start the truck, but all it will do is crank, turn over, and almost want to stay running, but will shut-off. The system wants to act like it is flooded, but how could that be? I do not see any leaks under the truck and I did install the new fuel filter in the proper flow direction. I do not know what else to check. What do ya'll thank?