infamous shifting issues with the 4r44e

[troymmill]

hey guys just rebuilt my trans cause of shifting issues and trans codes. put in new shift kit, gaskets, rebuilt valve body, torque converter, speed sensor. now heres the ringer first two shifts are too hard, but there are no trans codes.

 

[Rose2300]

That's probably the shift kit that you're feeling

 

[adsm08]

Troy, please explain to me in your own understanding what the shift kit does.