ReplacementRadios, one of the largest factory audio/video websites, has branched out!! If you?ve been to our site, you know we have a HUGE selection of OEM radios and compatible accessories. Now we?re offering a few select products here too. Same great ReplacementRadios quality.....in a new location. DETAILS This is a New Old Stock OEM GM antenna module. It appears to be listed for the 2006 Cadillac DTS but, as with any part, there's more to compatibility than simply having your vehicle on the list. Different option packages and trim levels often dictated different parts. The part number in this case is 15268661. Make sure the part number matches yours for 100% functionality and paint match. Why pay big bucks at a GM dealer? Get it right here for a fraction of their price. We do not guarantee this to fit anything not listed. We do not even guarantee it to work for all the vehicles listed, since there were often multiple part numbers for the same vehicle. We do not guarantee this to work in place of any other part number. We are selling it for exact replacement only. Match your part number. There is a 30 day warranty for your peace of mind, but it does not cover purchases made in error. Make sure the part number matches yours for 100% functionality and paint match. SHIPPING Shipping cost is based on weight and zip code. This site does the figuring, not us. If you feel their calculation is high, you might be underestimating the package weight and/or current shipping costs from our zip code (62401) to yours. Please don't ding us for shipping in the ratings, as we have no control over ever-increasing carrier rates. We will enter a tracking number into your order details here on the site. They will email it to you if your notification preferences are set correctly. A signature is not typically required. If you are not home to receive the package, it will most likely be left at your door. Please monitor it's progress and arrange to collect it when it arrives. This site provides a section/tab in each ad for Shipping information. We encourage you to check that section for prices, methods, time-frames, etc.