I have a 2011 5.0 with 21,000, I have a massive gas pedal hesitation from a dead stop, when I ease into the gas pedal I can depress it almost a 1/2 inch down with no response then the car kicks in, A major saftey issue, car was back at dealer they said there was a bulletin out that the modual between the tranny and throttle had to be re-programmed, needless to say picked the car up and 3 days later it's doing it again, Also when I come to a dead stop it feels like the tranny is trying to catch up with a slight bang, Anybody Else having this problem?? car is going back again for the second time this week..