anti theft disabled came on what do I do? on 1990 Cadillac Eldorado

New battery, and I disconnected it for 5 minutes went thru the 3 minutes that is asked and still the same. What can I do to get car to start?

3 answers 1 comment
Like the other answer says. Chances are the security wiring is damaged inside the steering column of your 1990 Cadillac Eldorado. There is a web page showing how to buypass the system using resisters. http://vats.likeabigdog.com/ This will be less costly then replacing the ignition.
Chances are the security wiring is damaged inside the steering column of your 1990 Cadillac Eldorado. Please read the following RepairPal article for more information - http://repairpal.com/gm-vats-vehicle-anti-theft-system
you can try a relearn process first...
turn key to "on", leave for 30 min. exactly
turn key to off for 10 min exactly.
repeat 2 more times. then remove key from ignition. let sit about 30 sec to a min. then try to start. if that doesn't work try to clean the metal ends, both sides, visable on key with a small nail file, using the not so rough side. lightly run across metal portion about 3 times. this cleans the contacts allowing the elec signal to be sent fully to start car. it worked for me, tried on first set of keys, worked. tried spare key w/o doing the filing and it didn't work. filed and it started. been working everyday, all day for last 3 months. hope it works for you, will keep about $150-$200 in your pocket.
You can try the procedure outlined above but this vehicle may not have a "theft relearn" procedure.