Your problem sounds exactly like what I'm experiencing. I've dropped the hammer a couple times to see if it made any kind of difference, maybe blow something out, didn't help. I think I'm gonna go by the dealership tomorrow along with the info you gave me. They have 2 options: get it right or get me new truck. Had an 08..never a problem, bought a 15, never a problem, bought the 19 and noticed this problem at about 400 miles..it might have done it from day one but I didn't notice. Thanks for info!!