Hey everybody! My 2004 Monte Carlo 3.4 wont stay running. When I crank it over, it usually starts right up but about a second later, it stalls. Thinking old fuel could be a problem, I siphoned out all of the old gas and put fresh gas in. while doing this, I swapped out the fuel pump, fuel filter, fuel pressure regulator, fuel injectors, spark plugs and wires, battery, ignition lock cylinder and ignition switch. The car runs on starter fluid when it's being constantly sprayed through the intake... not sure what else to try... The security light is illuminated on the dashboard but it isn't flashing, not sure if that's normal. Thanks.