-- 2008 -- Cadillac DTS Bose Radio AM FM CD Player DVD w Navigation, Voice Recognition, & Auxiliary Input -- Bose Sound System Version -- Part Number: 25851475 Compatible Part Numbers: 25815693 Reference Number: CQ-UG8760X Option Code: U3R This is for a professionally remanufactured OEM 2008 Cadillac DTS AM FM Radio CD/DVD player with Navigation, voice recognition, and Auxiliary Input. This radio has been cleaned, serviced as needed and thoroughly checked. The part number is 25851475 with option code U3R. This unit is for DTS vehicles with the Bose Sound System ONLY. If you do not have the Bose Sound System in your Cadillac DTS vehicle, it will most likely NOT WORK. If you are not sure this is the correct radio for your vehicle, please give us a call, and we can direct you to the correct radio. 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 a Cadillac/GM dealer a call with your VIN and they 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. *** Although this radio will be unlocked upon installation, please note that if you have Bose or any other specialty sound system, you may have to visit a dealer to get this radio configured properly for your vehicle. *** As you can see from our feedback, we package carefully and ship promptly via UPS Insured. 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.