2006 Cadillac DTS AM FM CD DVD mp3 Player Radio with Navigation & Aux Input *** UNLOCKED! *** Part Number: 15850502 Compatible Part Number: 15869780 Option Code: U3R. This is for a 2006 Cadillac DTS AM FM CD DVD mp3 Player with Navigation and auxiliary input. The radio is in great cosmetic condition in 100% working order and unlocked. The navigation disc is NOT included with this radio. We are selling this unit as a REPLACEMENT for the same part number. If you do not currently have this part number in your vehicle, or one of the compatible part numbers listed above, it will NOT work. Please contact a GM dealer for upgrade and compatibility information. Please have your VIN and this radio's part number ready. *** 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. *** This radio has been cleaned, serviced as needed and thoroughly checked. The radio you receive will be as described and pictured. Please don't hesitate to give us a call with any questions you may have.