Ettenom

Bought a 2015 LT Tahoe with "Buffeting" noise at 38-48 mph. Took to dealership they said it was the engine going from V4 to V8 and they couldn't do anything about it. Found this thread and tried taking the fuse but didn't work. Took back to dealership and they flew someone from GM to train mechanics on how to "fix" the problem. Talked with service guy today and they are having to take headliner out and add foam to fix. Waiting on parts. Arlington factory mentioned as the location these vehicles with these issues are coming from. Wish I had been aware prior to purchasing.