Cadillac CTS The mid-sized sedan that has grown the popularity of the Cadillac brand with it's low price and sleek styling

2006 CTS not starting "Service theft system" msg

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Old 10-15-2016, 06:15 PM
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Default 2006 CTS not starting "Service theft system" msg

So as title states my car a 2006 3.6 cts

Was running perfectly last used midnight or so yest.
Started and ran fine.
So I went to start today and all my accessories have power. So I know it's not battery. Nor the alternator because that was replaced in July.
I must admit for the 2 yrs I've owned this car I never had an alarm box and or a keyless entry remote. Only always used just a key. Is anyone familiar with this nonsense?
Thank you
 
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