Hey I am a new guy on here. I have a similar issue. I’m in the rust prone area of the world. The wheel bearing seems tight to me. I have not had the brakes apart. I just bought it and the previous owner said wheel speed sensors. It’s possible. But from my experience the bolt doesn’t walk out. It more like snaps off and you end up replacing the bearing. I am hoping to hear what your fix is so I can start there. For me, if I push the traction control button, the Yukon will not have issues. If I leave it regular, after I leave the stop sign I will get the stability track message and it will make the buzzing sound. I’ll come on here if I fix it myself. But for now I’ll run it and let the problem present itself further.