1998 Chevy S-10 fuel pressure

I do not have any fuel pressure. I took the fuel pump out and it runs fine hooked up to the battery. I've swapped the relay 3 times, I've inspected the wiring and it all looks good, I've changed the power connector at the pump. I pressed the relief valve on the gas line and there is no pressure, at most a single drop of gas creeps out. My next guess is the PCM. Any help?