Problems with the anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The the key and ignition lock cylinder must be replaced to correct this condition.Google+
Car Problem Reports
Cadillac DeVille Car Won't Start Because of Anti-Theft System That Uses Raised-Chip Key
Cadillac DeVille Problem
Average Mileage: 120,759 mi (14,000 mi - 199,170 mi)
Visitor, 1997 Cadillac DeVille, 54,000 mi
Car won't start, security. Installed resistor under dash, bypassed resistor antitheft. Car starts every time!
car seemed to be running fine.picked my grandson up from preschool and stopped at the store on the way home.turned off the car went inside for approximately 15 minutes. when i came out i put the key in the ignition.all dash lights came on but nnothing happened when i turned the key to start it.i tried getting a jump but still nothing. i ended up having it towed home.after doing some research came to the conclusion it was my anti theft system. i asked a mechanic friend to look at it to confirm which he did.unfortunately i cant afford to pay my local dealer to fix it so its been parked for 3 months. i have had to take a taxi to work or depend on friends and family for a ride.i am really disappointed with cadillac for being aware of this problem and not fixing it or at least recalling it.
Visitor, 1994 Cadillac DeVille, 180,000 mi
the car wont start due to anti-theft system, it will say wait three minutes then start, but repeat this process 4-5 times
Visitor, 1992 Cadillac DeVille, 188,000 mi
The car turns over but won't start. Let it sit for about 3 hours and It fires right up. The car starts beautifully when it wants to. I got stuck at the store left the car came back the next day and it started right up. I have no idea what it is. No machanic in my town knows and there computers don't know. No check engines light nothing indicating something is wrong.
Visitor, 1995 Cadillac DeVille
anti-theft (anti-owner) system.
Visitor, 1996 Cadillac DeVille, 133,000 mi
the anti theft light comes on on the dash and says the car may not start
Visitor, 1995 Cadillac DeVille, 180,000 mi
The Cadillac dealership can check the key in less than a minute to determine if the chip is good. The next step is the ignition switch. They are known for the two wires to break, but my ignition switch was bad.I bought an AC Delco switch for $40 and Midas charger $107 to install it. I did have to get Cadillac to cut and program the key. That was another $40 Good Luck
Visitor, 1997 Cadillac DeVille, 155,597 mi
my car will start theft system problem. we bought a new key and the cylinda is good how do i fix it or went can do check.
theft system car may not start bought it to dealer on friday still not fixed says needs ingition lock & coumpter box maybe 500 bucks
Visitor, 1993 Cadillac DeVille, 122,000 mi
car will not start