I have a 2000 Camaro. After getting my AC fixed, the security stays on. Reset?

I have a spare key but it didn't lock me out. It starts and drives perfectly. The entire AC system stopped working. I would turn it on. It would make noise but wouldn't blow out any cool air, heat and no way to clear a foggy window on cool, rainy days. Nothing. The mechanic had to pretty much do an overhaul on the AC system. He replaced the damaged parts, had to use dye for something and add the proper fluids. It costs $593.62, including labor. The AC system works perfectly. The AC now blows out really chilly air. The only thing is that the security light now stays on but doesn't affect the functions. I haven't called the mechanic yet. Maybe I should so he can tell me how to reset it or check it out.

Sure, Great, that's not a bad price for in depth A/C work. Have him scan it with a tech 2 or any scan tool that can communicate with the body control module and VATS. If the VATS systems (antitheft) fails while the vehicle is running, it will let the vehicle continue to start and run. If it fails while the key is out, it will lock you out. It is probably something like the key or ignition switch, but may be a little more in depth. These are also known for a wire breaking or slipping out of the connection on the key lock cylinder. Don't, whatever you do, don't unplug the battery. It will lock you out.