No worries I don't know much about the Cavaliers, but I believe they needed this integration harness for the door chimes and some other features to work in the car, when replacing the factory head unit. I am sure that some others here on the board can put in their .02 on the matter. http://www.shopperschoice.com/item_METRA-GMRC_01_path_7_item_26620.html

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Location: Vancouver, B.C.