No fuel to the engine
3 days ago I tried to start my 2002 Chev. Suburban, it didn't start and sounded like it wasn't getting any fuel. I have a fue injection pressure tester, connected it to the fuel rail and turned on the ignition and got "0" pressure with a half tank of gas. I removed the fuel filter and had someone turned the key while I watched, I got a brief squirt and then nothing. I installed a new filter anyway. I checked the fuel system relay in the electrical box in the engine compartment. I had someone turn on the key again and felt the fuel system relay, after 3 seconds I could feel the relay "click". I swapped out the relay with another with the same part # and it did the same thing. Is this some kind of a anti-thieft program, if it is how do I reset it ?