If you can get the installer to provide pics of everything, that would be great. What did you decide on the Fix82? I'm very interested since I'm hoping to do something similar to my '19 Sierra Denali w/factory Bose.
It looks like there may be a software update that was just released for Nav TV --
ZEN AVB-GM
NTV-KIT955
**********************************************************************************************************************
SW:
02-21-20
ZEN-AVBGM-1.2-2-21-20.enc * Spike after phone hang-up
* Balance/Fade curve
* Volume curve
* stream re-init during aborted sleep
* ethernet wake up during aborted sleep
* resolved race condition during sleep entry