[Fallen_Angel]

I'm Having the same issue on a 97 express. 5.7 votec. Someone tried stealing it once and messed up the ignition. It was hard to work the ignition but after a year I finally replaced it. The security light comes on with the key just like it always did. After the motor starts the light comes back on and the engine shuts down. There is no chip on the key and the cylinder has no wires. The little button with the two wires on top broke so I tried twisting them together. It didn't work. Is there something missing for the three wires on the side? I mean I don't see anything in there but that seems the likely place for a problem.