-- 2007 - 2008 - 2009 -- Cadillac DTS & SRX Radio AM FM CD Player with Auxiliary Input -- UNLOCKED! -- Part Number: 25818943 Compatible Part Numbers: 15877516, 25808216, and 15948004 Option Code: US8 / U2R This is for a 2007-2009 Cadillac DTS and SRX AM FM CD player with Auxiliary Input radio that has been professionally remanufactured. This radio has been cleaned, serviced as needed and thoroughly checked. Part number is 25818943 with option code US8 or U2R, so please make sure this is the correct radio for your vehicle. Appearance is great as pictured, function is perfect! No codes required, it will plug and play! This radio is being sold as a REPLACEMENT ONLY! If you do not have one of the compatible part numbers listed above currently in your vehicle, it will likely NOT WORK. If you are unsure of your part number, give us a call 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. As you can see from our feedback, we package carefully and ship promptly via UPS Insured. This model came with select part numbers that are completely interchangeable, therefore you may receive a different part number. Please let us know before purchase if you would like a specific part number so we can check availability. The radio you receive will be professionally remanufactured and upgraded as described. Please feel free to give us a call with any questions or concerns.