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2004 CTS 3.6L
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Discussion Starter #1
So I was messing with my 2004 CTS 3.6L. One thing I tried was opening the door while the key was still in the ignition the car was of course parked and turned off. Then after I tried to lock the door, the car made a beep. After that, I got out and locked the car and everything worked fine. However when I tried to later open it it would not work.

So I unlocked the car with just using my key without using the key fob remote. Then I repeated the same processs and my key fob remote worked again perfectly.

So if anyone could explain to me what I did, or if this can help anyone reprogram their keys, it woudl be a great thing.

Thoughts Opinoins?
 
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