Car Alarms: 1997 elderado factory alarm, cadillac dealer, elderado

Question
i am a mechanic working on a 1997 deville. it wont start, and when it does it only runs for a second. i have checked the fuel pressure and pressure regulator. it gets good spark, and runs when i pour fuel in the intake air tube to the filter. i also put oil in it to the full marker. it was very low and i didn't know if it had a float shut-off in the pan. it has an aftermarket alarm on it, and it seems to work right. on the dash display when i booger with the reset and mode buttons i am getting from the run position a readout saying..."security system malfunction. engine may not restart. i have the original ignition key with the chip in it. the door key i am not sure is original. it doesn't have a chip in it. i have shut all doors, trunk, and hood and made sure the push switches in door hood ect. are working. or they seem to be. i did not probe them with a meter. anyways after closing everything including the windows, i locked and unlocked the driver door with key, and did the same with the passenger door. i spoke with the Cadillac dealer, and they said it "sounded like" it was the ignition tumbler switch set.and most likely is not a bad key. can you please look into my problem. thank you,
Dan

Answer
Understood , & I feel your pain. Really I do!
I get this inquiry at least 10 times a day,
and of course I am ONLY THE MESSENGER here
so please blame the engineers at GM.

The Original VATS in this is a flawed and irritating system yes.
A permanant bypass is suggested after you relay and resistor
bypass it. See this option on my website at www.GMPASSLOCK.com.
  
I hope this helped some.

Good luck.

ALARMTEK