I just got off of the phone with Nav TV and they told me they should have fix by next week. Of course we shall see if this holds true. I am waiting on a working oem interface option for my 2020 2500hd with bose. Nav TV seemed the way to go, but i am not sure. I have PAC Ampro 4 on my 2016 2500hd and it worked well with a Rockford Fosgate DSR1. Just like many of you, I have all my equipment minus the interface. All i can do it watch the clock tick!!!
Joseph