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  1. CTS First Generation Forum - 2003-2007
    Hey all, new to the CT’s and telling you I love mine so far. I have a 2003 CTS and I have a couple of questions: 1. When I am starting to slow down I have a a howl from the rear of the car asked my mechanic and he said it has a corvette differential and is a posi unit Should there be a howl?? 2...