If you were thinking of doing the Bluetooth upgrade everyone is raving about one thing to know is if you have the navigation unit with OnStar it will not work. I purchased the module, took apart my dash and no module anywhere to be seen. The spot for the module is there but it's just an empty hole. I have a 2012 LTZ with navi. On the bright side it did give me a chance to wrap some dash parts in carbon fiber. ImageUploadedByAG Free1362258695.934780.jpgImageUploadedByAG Free1362258764.631990.jpg
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