Is there anyone on this forum that is having down shift problems. My 2007 used to hold back when speed climbed above set speed while going an down hill. I had an injector freeze open and shorten a con rod. Varsity Chrysler in Calgary, Alberta installed a low mileage replacement. Before the engine swap the trans held speed going down hill even with fifth wheel in tow. Since the swap if cruise is on and it tries to hold one gets a severe jerking when hold back starts. You would swear that the trans will destruct if not disengaged. They can't isolate the cause and FCA's response was that they all do it. Bull to that.