Sets for a while and it will start and run for a minute .Thing about it is turn the switch on and oil pressure guage good to 80 ,I know it will start but get it started and about when the pressure drops it quits.Try starting it right away no go let it set for a few minutes will do it all over again.Changed fuel pumps and fuel relay ,what I'm I missing.
2005 gmc 1500 stalls
