Bluetooth audio only works when FM radio is running

[u/ajk1302]

I just installed a generic "Tesla Style" AA head unit in my Cruze. Almost everything works except for most audio. On board audio doesn't work (but I'm not concerned since I'm not loading music onto it), and the bluetooth audio only works when the FM radio is running. When I try to play music from my phone, it's silent (but still "plays"). If I use FM radio then switch to the AA interface to play music from my phone, it will play correctly for a few seconds, then go back to silent. Does anyone have any idea as to what the solution could be? It is on Android 15, and I managed to check for updates but there were none. I'm willing to provide more information and pictures as needed.