I actually don't even think I have ANC. I don't have the build codes but looking at my headliner I only have the 2 mics above the driver and passenger. I believe those are just for the Bluetooth, I don't have any other mics anywhere in the headliners or the posts. Do you know if that is accurate? With RAM I could email customer service and get a full list of build codes, does GM do something similar? ThanksFound their website and sent them a message thanks!! Yes, I remember the ANC freaked out in my RAM and I had to disable it. I am assuming I would have to disable it as well in the Yukon. Do you happen to know how? Once I install an aftermarket AMP that will kill that feature anyways i believe. In the RAM, I just had to go into the headliner and unplug the microphones and that solved the humming issue. Not sure if it would be the same here. Thank yiou again all this information you are providing is very helpful.!!