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Re: 2004 Cadi CTS Wont Shift From Park Nor Release Key
Posted to Technical Discussion Forum on 9/6/2011

Hi Jeffrey,

I know what you posted. Is the ECM the only possibility? The only reason I responded was this car is interesting in that it has 3 different protocols for communication. You're right that this most likely needs an ECM. Why? How many modules are su... Login to read more.