Starting problems 1998 Silverado

When starting my 98 Chev Silverado it will crank like it's not getting fuel then when I let up on the ignition and try it again then it will start. The fuel pump is working fine and was replaced about 1 year ago. I've been told it could be my Fuel pressure regulator but where is that located on a 5.7 vortec 350 and how hard is it to replace.

They are not hard to replace. The FPR is generally located before the Fuel rail near the throttle Body. If you look online for an FPR you should be able to match it up to where it is exactly in the truck

Test fuel pressure before you replace. It is located under the upper intake manifold.

Test fuel pressure before you replace. It is located under the upper intake manifold.

I had the pressure tested from the schrader valve and it was at 60 psi.

You need to test the pressure with the engine cold, while trying to start and running. All 3 should be 60#

Also when I did check the pressure the line bled out after I turned off the motor.

Thats your problem. It has to hold pressure. Still could be the pump or regulator. Pinch off the flexable return line with a vice grip. Turn the key on and off. Watch the pressure. If it now stays, replace the regulator. If it still falls, replace the pump.

Where exactly is the pressure regulator

Under the upper intake manifold.

Thanks,