Hey I actually thought this sound was in my head but seeing your thread makes me think your not alone. I also hear it on Xm and it's been doing it for about a week. Best way I can describe the noise is that it sounds like a rock hitting the windshield. No clue what is causing it tho.colonelcasey wrote:I've noticed that during my most recent drives, a strange intermittent popping noise occurs when I'm listening to SiriusXM. It's just a quick snap or pop that happens every few minutes though it increased a bit more in the most recent drives. Sometimes it's a few pops and it goes away and other times it's quite a few in a relatively short period of time. Not really sure of any other way to explain it. Any one have any experience with this or know what might be wrong with it?