Hey guys I rebuilt my 4l60e when I put the truck in Drive it feels very sluggish and immediately code pops up P0758 and go straight into limp mode I have changed solenoids valve body Tested and inspected all wiring. Also if I manually shift it into D3. D2 and D1. It feels fine. I don’t know what to do. Any help.

 

I would start with this... It's a few pages from my ATSG code book. You should be able to find it from here.