So I've seen video on youtube of grand prix GXP's with the HUD being demonstrated and when they change the station it shows the xm station. Mine doesn't. It just says "xm1" when scrolling through stations. On FM it shows the station, and cd shows the track # just like on the video. So my question is how do I get mine to show the xm station? I've flipped though the pages in the HUD menu with no success.