help troubleshooting engine shutdown while driving down the highway on 1997 Buick Park Avenue

and it appears on the dash a that the security engine warning light is flashing and the vehicle fails to start?

2 answers 2 comments
check engine light probably set a code, get a diagnostic scan at trusted diagnostic shop, any engine shut down needs immediate care. Were you having any problems prior to this shut down?
NO SIR NONE HOWEVER HOW DO I RESET THE SECURITY THING?
scan codes and post so we can adv. could be anti theft loosing signal from key or key cyl
I BELIEVE THATS IT HOW CAN IT BE RESET?