I have it on a new Laramie, and I DO NOT LIKE IT. It sounds like some kind of artificial diesel noise in the cab that is real annoying, If Im on a rough road, it has a droneing, thumping, bass sound, it almost sounds like a kid had pulled up beside me with a boom box sometimes. I've even turned the radio off thinking it was coming from the song, or the speakers somehow, but it didn't make any difference, but the sound is coming out of the speakers. I called the dealer just this morning, and told him about it, and is there a way to shut it off, but no. I did find out there have been a bunch of complaints about it, and he said to bring it in next week, and they have to go through a bunch of steps to diagnose it, but he said they will get it fixed, through either a new software update or a new sound component.