How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Jerry Newton Your Own Question
Jerry Newton
Jerry Newton, Cadillac Technician
Category: Cadillac
Satisfied Customers: 4484
Experience:  ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.
25345654
Type Your Cadillac Question Here...
Jerry Newton is online now
A new question is answered every 9 seconds

Just picked up 97 Deville. Not running. It reads, "THEFT

Customer Question

Just picked up 97 Deville. Not running. It reads, "THEFT SYSTEM PROBLEM" , "CAR MAY NOT START". Is there a way to clear this code at home. Because the car don't start.
I tried the trick of turning inj on and off three times and then unlocking the doors with the button on drivers door. But dawned on me, trunk latch is broke, possibly maintaining trouble code?
How do I get this car restarting?
Submitted: 6 days ago.
Category: Cadillac
Expert:  david craig replied 6 days ago.

Hi Im David, if you turn the key to the run position, does the theft light blink?

Customer: replied 6 days ago.
No not now
Expert:  david craig replied 6 days ago.

it doesnt blink? is it on steady?

Expert:  david craig replied 6 days ago.

im closing up shop and headed home. ill be back on in about an hour.

Customer: replied 6 days ago.
The "securty" light in not on at all
Expert:  david craig replied 6 days ago.

thats a big problem and you will never get it started. you need to have the vats system looked at and probably reprogrammed.

Customer: replied 6 days ago.
Im sorry. My ringer was off.
Customer: replied 6 days ago.
Securty light now blinks when i enter the car.
Expert:  david craig replied 6 days ago.

ok, does it blink with the key on?

Customer: replied 6 days ago.
SoooooNo blinking with key on
Expert:  david craig replied 6 days ago.

with key on is it on steady?

Expert:  david craig replied 6 days ago.

does it go out when cranking?

Customer: replied 6 days ago.
Just the "theft sys" cycles through
Customer: replied 6 days ago.
All lights go out when cranking
Expert:  david craig replied 6 days ago.

then its not anti theft.

Expert:  david craig replied 6 days ago.

can you hear the fuel pump running for a few seconds when you turn the key on?

Customer: replied 6 days ago.
Customer: replied 6 days ago.
It has preasure at. Fuel rail
Expert:  david craig replied 6 days ago.

ok. good. and you said you have no spark correct?

Expert:  david craig replied 6 days ago.

are you there?

Expert:  Jerry Newton replied 3 days ago.

If you are getting that message on your information center, then there is absolutely a theft deterrent issue, and 99% of the time, it's due to a failed ignition lock cylinder.

The lock cylinder, with the tiny wires that read the key chip, needs to be replaced along with new keys. You'll likely have to visit your dealer to get the keys read, and they can provide you with the correct parts to make your car start. Replacing the lock cylinder requires some special tools that you probably don't own, so my recommendation is to refer this to a repair shop that can do it for you. Expect this to be about a $400 repair with parts and labor.