Truck will crank then die. its like something is cutting the fuel off. on 1998 Chevrolet 1500 Pickup

Is there some kind of security code to this problem???

1 answer 3 comments
Got the little resistance pellet (chip) in the key?
No. Its been scanned. also if i pour gas in the throttle body it'll crank up & run until gas is all gone then die again
Replace fuel pump module! Without a doubt.
Okay. we've replaced fuel pump.
where is the fuel pump module?