Big shout out to all that contributed to this post! I have been using SXM for several years, recently bought a 2023 MYLR (AMD Ryzen) and was bummed that I couldn't get Sirius. After reviewing this post I bought a used receiver from EBay out of a 2018 Model S (1143711-00-B) followed
@dude7 excellent instructions that he posted and all is working well. After installation I did a reboot by pressing down on both steering wheel buttons and SXM showed immediately playing the preview channel. After copying down the radio ID number, I went on line and signed up for a 3 month trial. I did have an issue getting the radio to activate, but finally after multiple refresh attempts I figured I would try putting the MY to sleep and then waking it and that worked.