Having problems with your 2003 Cadillac CTS ?

2003 cts won't start - we changed the fuel filter and it started

\015 Fine but it died at the next traffic light and would not start again. The car has 106,000 miles on it. The code reader we borrowed from Autozone does not register any problems. Before all this the car was not starting after coming to a stop and turning it off until later after it cooled off a while.\015 Posted / edited by AnonymousUser on : 08-03-2021

Answers :

Many cars these days are equipped with an immobilizer. (you can find more information about the immobilizer in your owner's manual). The immobilizer allows the engine to run only if the correct key is used. If your car has an immobilizer, you probable see a "Security" or Key-shaped light coming on on the dashboard every time you turn the ignition ON. If this light is flashing when you turn the ignition ON, it could mean that there is some problem with an immobilizer or the system does not recognize the key. If the immobilizer doesn't recognize the key, the engine wold not start at all, or would start and then die in few seconds.
You can try a spare key, if it won't work, your dealer is the place to call. Sometimes, the key is just need to be reprogrammed. On some cars you can find the information how to reprogram the key in the owner's manual.
You need to use a better scan tool to read historic faults autozone scan tool will not read history
Repair Help & Product Troubleshooting for 2003 Cadillac CTS

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