1996 Chevy Truck cranks but will not start

I havea question for you! You stated that it has fuel pressure and you also stated that you put a shot into the throttle is this the way you checked the pressure? If not and your possitive that it has pressure, check the fuel pressure for proper specs.

If your not sure check the fuel pump, it sounds like it may possibly gone out.

Whlie someone turns the key to the on position put your ear close to the filler door, the hatch were you refill the car with gas. Make sure its open and listen for a short humming sound if you here it the pump is spinning if not is out. But if the pump is working it does not mean well.

Hope this helps. Keep us posted.

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I try to answer questions as though it were my car.
My way of standing in your shoes looking to diagnos the problem.

It sounds like you have a shorted MAF sensor, if you unplug it will the truck run? Please go over this video to see what I am talking about:

https://www.youtube.com/watch?v=lXLJbuAZ4CE&t=29s

Also, we should check the codes, this guide can help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please go over these guides and get back to us.