Rumble noise
Going through a snow ice storm last night and I pressed the 4HI button and it flipped back to 2 wheel. I held the button down and then it engaged. Today after driving about 20 miles, I heard a rumble strip noise when slowing down. This happened on a number of occasions and then I switched back to 4HI and it did not make any noise when slowing down. However when I went back to 2WD it made that same sound when slowing down only. Anybody have some thoughts?