1999 buick Le Sabre No Crank/ No Start
Had no prior issues with this car! I went to the local Gm dealer, had a new ignition key made. Dealer used tool to check what key I needed, cut new key, I went and tried new key, no issues, car started fine! I gave this car to my son to drive, he drove car, shut off car, started it with no issues. He shut car off, went to start, nothing happened. I went to check out car, tried the original keys, no cranking at all. Car has new battery up to charge, has spark at the coil when i jump starter, I can hear fuel pump coming on, has pressure at the schrader valve. I Installed another starter, same issue. I checked the starter small wire with a test light while someone else held ignition switch in the cranking position, and the test light does not light up.I turn key on, and the SECURITY light flashes. I left key on for 1/2 hour, SECURITY light stays flashing! Any ideas what I need to check next or how to clear SECURITY issue so I can start car? What may of caused this problem in the first place? Thanks for anyone'* help!