Back in November I bought a used '19 Silverado Legacy and noticed the grinding noise only in 4H only when turning. Does not have it in Auto or 2H, have not tried it in 4L. Really haven't had a use for 4x4 mode till we got all this rain in GA and used it going in and out of my driveway. I've also only been keeping it in 2H. Thought about contacting dealership about issue but I'm glad I'm not the only one having this issue. Any more info would be greatly appreciated.