"tranny shudder" at 45-50 miles per hour

[Longshot270]

Originally Posted by RajunKajun59

I realize this is an old thread, and noticed you fixed your issue.

I have noticed mine shudders at the same speeds, but when the torque converter unlocks, upon light acceleration. I am currently running a stock Edge EVO on Lvl 3, and Lvl 2 when I tow. They both do it, but I also played with the shift firmness settings, it is still happening. Is this something that the Custom tunes I am waiting on might fix, or is this commeon in an 07 Screw 3.73 Rear end 2WD?

Don't play with the shift firmness setting. The OP fixed the problem by adjusting shift/lock points.