Q&A

You need to get a proper diagnostic at a repair shop.
It might be the computer, but it might be a sensor or a $10 relay. You won't get diagnostics through the internet.

Zee

more than likely the fuel pump is out listen for a fuel pump running when you turn the key on its inside the fuel tank. If you don't hear it leave the key on while you hit the bottom of the fuel tank with a rubber hammer. then try to start it if this gets it started then you need a fuel pump. If it don't then you need to check fuel pump fuses an relays.

This motor had noids which fail as well. What doe the pressure do when your cranking it. Can you get the motor to fire by spraying carb cleaner into the throttlebody> Be careful with this! Good luck and happy holidays.

I have a 1998 Chevy 2500 w/ a 5.7 that wouldn't start even though the truck had good spark, fuel in the tank, and I could hear the pump spin up and pressurize when I turned the key. I stuck a fuel pressure gauge on the fuel rail port and was reading about 50 psi. Unfortunately, as high as that sounds, the injectors won't even open until you are at about 60 psi. I could barely get my truck to sputter to a start when the pressure was showing 58 psi. I replaced the pump and the the truck started right up and has been running fine since. Buy, borrow or rent a fuel pressure gauge before you invest in a new pump since they cost about $200-$300.