It all started after the car, 1992 LT1, sat for awhile and needed a battery charge before starting. Well it wouldn't start, as a matter of fact it wouldn't even crank. Now, much time later and after numerous checks, tests and sweat I still haven't found the problem. Getting close however. I've found that if I ground the black and yellow wire from the starter enable relay it will start for a second but then die. Don't know what that means but that's what I've got. The ECM has been tested and is supposed to be OK. When I turn the key "on" all other systems work however the SECURITY light doesn't come on. Fuel pressure is fine. If I "pump" the gas peddle rapidly after it fires it will continue to run - poorly - until I stop, then it will die. ??? Frustrated.