Yesterday, I got in the car and when the radio booted up, attempted to select XM (radio had been on AM). The "Sirius XM" displayed, along with the channel name and the name of the current selection, but just momentarily, then "No Signal". I could return to AM, but when again selecting XM, it went through the above sequence. Didn't matter what channel. Parked the car, oriented in a different direction than I had been traveling, and tried XM again; it came on, but was weak and distorted, sort of like it had just a very weak signal. Returned to AM, went home, then stewed all night, worrying about the dealer trying to fix it.
Upon firing things up today, all was well; I've run several errands, shutting it down and restarting, and every thing was hunky-dory (technical term). My original thought was that the antenna lead had been damaged somehow, but I don't see how.
Anyone else have such a problem?