I have a 2020 sport with the 8.4 and it seems like when I listen to my music loud, above 22-24 on the volume control, it goes into an auto volume mode. For instance, I like rock music and when the symbols or a loud guitar come in it quiets it down significantly and makes it almost like a bland volume that is no louder than any other part of the songs. The more I turn up the volume the quieter it gets. At 25 the music is louder than at full volume. Does anyone know if there is an option to shut off the volume control on these trucks? I went to the dealer and showed him what I was talking about and he heard it and said "well that's a new one" and told me he never saw it before. It is almost like when they made the TV commercials have to come in at the same volume level as the show you were watching, which is good for some but not when you are trying to rock out! These trucks have a good stereo system in them and I want to be able to use it.