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. SUMMARY Factory original GM XM radio tuner Works on the SiriusXM network Made for GM by Delphi Electronics Does not include any wiring (Just what you see) Does not include an antenna (Just what you see) Good condition Has minor scratches from bulk storage But it is mounted out of sight in vehicle... GM part number 25773123 Match your part number 30 day (exchange only) warranty Clearance item Returns are not accepted DETAILS This is an OEM GM XM tuner. It is the part number listed. Our research indicates it is a possible option for the 2005-2007 Cadillac STS. However, it is up to you to make sure you have this part number now. GM offered different parts in many vehicles and often they looked very similar. That doesn't mean they're all interchangeable. We only guarantee it for exact part number replacement: 25773123. Having said that, we're offering this at an insanely cheap price. If it looks like it matches your plug, you can afford to take a chance. ABOUT US: We are not a salvage yard. We are not affiliated with a salvage yard. We don't have the typical parts sales mentality. We specialize in one thing: factory replacement audio/video and accessories. We're very picky and strive to provide radios that we'd be proud to have in our own vehicles. When you buy a radio from us, you're getting a unit that is guaranteed to work. Occasionally problems arise with electronics. However, please know that we never knowingly send out a radio that exhibited problems in our testing. It's not in our best interest to send out defective units because we'll just waste time and money replacing them under our warranty. Please give us a chance to add you to our long list of satisfied customers. SHIPPING HANDLING 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.