I have an 06 4.7 v8 dc. It has exactly the same symptoms.
Taking it to the dealer tomorrow.
I have new balance tires and I just replaced the all the plugs. And ran cleaner threw the fuel system. Also just had breaks and rotors. I got the top dollar parts not cheap because my mechanic is moving soon and I'll be losing his great pricing
Stil vibrates Same ros and rpms exactly as you described not every time but it does do it. I was starting to wonder if it was the transmission. I am afraid it this confirms I'm right.
I'm going to the dealer tomorrow.
How much did it cost to have it cleaned out?