How do I reset my security feature in my 1989 Fleetwood Coupe De Ville?

Question

I changed my alternator, and installed a new battery, but when i tried to start my car it woudn't start and the security light started flashing. I contacted the Cadillac dealer to get assistance on reseting the system, but they refused to help me stating that I would have to bring the car in at a price of $150 to reset the security feature. Can anybody help me!!!!!!!!!

Answer 1

see your mechanic,,he will hook it up to his instument that they use