I have a 2016 3500 4x4 duelly with 25000 miles that every time except the first I tow it sets C0045 (right rear wheel speed signal erratic). And now it is setting sooner and also setting C0050 (left erratic) The dealer has previously replaced the right sensor with no affect. The next time I tow as always it goes through a traction control event at highway speeds modulating brakes and in one event almost causing a complete loss of control. The red brake,ABS,Stabilatrak and only the last time the trailer brake warning lights come on. The dealer has had the truck over two months this time. I am a A.S.E. Master auto and light truck technician and completely believe the problem is in the rear differential. The ABS tone rings are at the side bearings of diff. ever since this 11.5 inch diff. was updated in 2015. The first time I did the oil change after the two free I found a glob of oil metal mixture the size of a large jaw breaker on the fill plug magnet. I do not wish to incur the cost of doing this myself since it is still under warranty. HAS ANYBODY SEEN THIS OR ANYTHING LIKE THIS. It does not have any communication U codes as with TSB PIT5569A.