MrBondTN

I have a 2015 Yukon Denali that began showing the vibration around the 11,000 mile mark. I would describe this, as many others have, as an extreme vibration and buffeting that sounds like a window is down creating uneven cabin pressure--except the feeling and vibration is worse than that. It also sounds like you're running over very bad pavement. It shakes the whole vehicle in a bone jarring way and even makes people nauseous. I noticed it was more likely to happen when maintaining speed on an incline or level road but rarely downhill. I took the vehicle into Sierra in Madison, TN. They appear to have fixed the the issue using Bulletin 16-NA-175, which calls this "Torque converter shudder".