2016 Ram 3500 Cummins 6.7 Crew Cab Tradesman Longbed: I took it into the dealer to get two recalls completed. One was a solenoid. After I got it back, I drove if for 15 miles and then would shift out of 4th, when I cam to a stop if would shift out of 1st. I pulled over and did the 3-on rest, a...