I have a 2006 dodge ram SRT10 with 191540 miles on her, and she started to hesitate at 80 mph, but when I drop the speed down to 65 0r 60 mph, she doesn't hesitate. She started doing this Saturday night when the wife and I were heading home. By the way, there's no engine light on and no code to determine what's happening. Plus, when I put it into drive, it jerked hard. When I put it into drive this morning, it didn't jerk hard. Then I get to work this morning and put it into reverse, then put it into drive. It jerks hard.