Originally Posted by snrusnak
That's strange. What gearing and tire size did you have? If you had 3.55's and stock ~31" tires shifting out of 2nd prime ~5600rpm would put you at ~100mph+. Not sure why that would be needed unless you had a really fast truck.
My truck in manual mode forces a shift from 1-2 at 5600rpm, my programmer didn't even over ride it correctly for a while. That being said, it will not shift from 2-3 unless I shift it. The only gear my truck has ever forced a shift in is from 1-2 while in manual mode.