Automatic Transmission Torque Converter problems of the 2013 Dodge Ram 2500

There appears to be two possibly related issues with regard to the powertrain. The first issue is some sort of backlash in the drive train when accelerating to 30-35 mph and then letting off the gas. The system seems to shift gears before the torque converter unlocks. The second issue is that when accelerating from a stop there is a significant lag in response between the engine and the pedal both in accelerating and decelerating. This can cause an issue when pulling out into traffic. Both of these relate to the bcm and the electronic throttle control. Multiple visits to the dealership have not solved this issue.