2009 2010 2011 2012 2013 2014 Cadillac CTS AM FM Radio CD Player with Satellite Capabilities. Part Number: 20953629. Interchangeable Part Numbers: 20804088, 20857843. Option Code: U2R, U2K. Dealer Unlock Required. Radio Face Not Included. Code not included. This radio will need to be unlocked by a Cadillac dealer and paired to your vehicle. See below for details. This is for a Cadillac AM FM radio CD player that includes satellite capabilities. This radio has been professionally remanufactured, cleaned, serviced as needed and thoroughly checked. The radio's appearance is great, as pictured. This radio is in 100% working order. Blemishes: Very minor wear on the radio chassis. This radio is being sold as a REPLACEMENT ONLY! The part number is 20953629. If you do not have this exact part number currently in your vehicle, it will likely NOT WORK. If you are unsure of your part number, contact us with your VIN and we should be able to provide you with the correct part number. They may look the same and have the same plugs but data streams may be different, not allowing them to code. For example, external amps are used in some cars and will not allow interchange, etc.