Security light, 2001 Olds Alero

I have a 2001 Olds Alero.  I recently lost my key and had to drill out the ignition lock.  I was successful at my attempt and was able to remove the ignition lock.  I purchased  a new one at Chevrolet.  I brought them my title and reg and they retrieved the vehicle key code and cut me 2 new keys.  I took the keys and lock to a reputable locksmith due to time restraint as suggested by parts person.  The lock was coded to the keys and I then installed the new lock and reassembled everything.  The car starts and runs fine but I have a steady security light.  Is there an easy solution and if not, I'll take any information available.Take nothing but photographs, leave nothing but footprints

Your car has Passlock II. It is an immobilizer system built into the key/ignition cylinder/switch. It is separate from your key cylinder, but is a a part of the ignition barrel. It has three wires attached to it. Usually black, white and yellow. You may have damaged it in the process. I would suggest that you find a dealer or knowledgable mechanic that can repair it for you. There are many possibilities of what could have happened.sparky

Ok, thanks much!Take nothing but photographs, leave nothing but footprints