I too would suspect the problem is actually originating from how the computer processes throttle inputs. I have the hemi, but the transition from 2nd to 1st on deceleration followed by acceleration on my truck was SUPER SLOW, and once the truck finally got its act together, it would slam from 2nd to 1st in order to accelerate (delayed) in response to the throttle input. The truck now has 22K miles, and I recently installed a Pulsar tuner. That eliminated the issue I describe above, but my truck is also in the correct gear at all times now based on the speed I'm running. All shifts are seamless, and my adaptive cruise works so much smoother as a result of always being in the correct gear. These were all pleasant side effects of the tuner. So I suspect, as stated above, the PC would probably eliminate your frustration, and $300 is worth the price of admission, eliminating poor dealership experiences, and instantly enjoying a $35k-$60k truck. I seriously doubt that there have been any significant changes in engine and tranny from one year to the next, but...engineers playing with software to meet stringent EPA standards...messing up a good thing...I can absolutely believe.