Cadillac Repair: security key for a 1992 cadillac, electrical schematics, security key

Question
my 1992 caddie will not start it has all power. the parking brake will not relase also the securty light is flashing what would cause this

Answer
You will need, If necessary, Electrical schematics and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture.  I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.