I have a 95 Chevy Tahoe with a 5.7tbi with 1769 thousand miles on it. It has a brand new egr value , stator, ignition coil, spark plug and wires, distributor  cap and rotor. Last night after I put gas I started to drive and when I gave her a little bit of acceleration the hoe started to sputter like if she was running out of gas and stalled on me she stayed back up easy with a obd code 54.i cleared the code. This morning I went outside to started her up before work she let me drive her to the gate and whole I was unlocking my gate she died on me. And wouldn't start back up on. She would crack but would not run. The only way I could get her to run is by spraying starting fluid into the throttle body but then dies right after. I thought it was the fuel pump relay but that's not the issue so then I check my fuel pump for sound and I heard it coming on so I assume that's not the problem.. what could the problem be??