I have a problem from time to time especially when it is cold in the morning. Even if the cruise if not engaged at about 55-60 MPH steady throttle just after the shift to overdrive the truck will surge or more acuratly studder. There is no change in boost or TGT. I get no codes or any other indication other than feel. I have tried to get it diagnosed but can't seem to get any answers. I am at the point where I may start replacing throttle positions sensors ect until I find a fix....any help would be greatly appreciated.

 

Are you sure it isn't to torque convertor locking and unlocking? Try cleaning the battery terminals and other grds. Do a search on electrical noise.

 

hard to say for sure without driving it/riding in it, but sounds like the torque converter slipping & shuddering when it tries to lock up