truck turns over but won't start. It acts like it wants to start but won't. on 1996 Chevrolet 2500 Pickup

replaced battery, checked fuses.

Asked by for the 1996 Chevrolet 2500 Pickup
You need to verify fuel pressure and volume.
I can hear the fuel pump when I turn the key to on, after a few moments it stops. After I try to start it I can hear it again until it builds up pressure and stops. I also changed the fuel pump relay. A friend let me borrow his code reader, I will do that soon and should have an answer. Thanks
Pastorbillw, that is not a proper fuel pressure and volume test. The noise that you hear and then stops is not pressure building up. If the engine isn't running after about 3 to 4 seconds the computer stops grounding the fuel pump relay. Unfortunately you or someone will have to hook a fuel pressure tester to the fuel rail and perform the necessary test.
A friend at church told me to to change out the ignition module. So today I changed out the distributor cap, rotor, mag. pickup, and ignition module. Truck started right up! Everything inside the distributor looked bad, that's why I changed them.
Thank you Lord it's fixed!
Thanks for the input!
God bless!
2 more answers
there are a few thing that will cause it not to start I will give you the line up as to what to do first to last moisture in cap use a drying fluid like starting fluid (watch eyes)to dry it out fast second thing is there could be frozen water in the fuel line (known as fuel line freeze up) fuel pump could of died coil control module (next to coil passenger side) and last but not the end of GM's fun things the crank position sensor
Fuel not pumping fuel