I have a 2025 tahoe high country and noticed right away a significant audio volume difference between the front seats and middle seats. To the point I have to turn it up and get blown away in the front seats for the passengers in the middle seat to hear it at a normal level. Ive gone through all the settings, normal, centerpoint, fader in the middle etc. I had the dealer run diagnostic tests and everything checked out fine. there is a message into gm engineering currently awaiting a response. What i measured was an average 8-10db difference at ear level between the 2 rows. I really hope it wasnt "designed this way" by GM.