99 sliverado Z71 is not auto shifting, this is a internal rebuilt and had to manually shift gears to test drive. it. Did I miss something or double check something minor. Wanna avoid dropping this tranny and transfer case, it was a PITA. Reverse is a hard shift getting From P into R and then N.. 1st gear is limp mode takes for ever to get up to speed and does not shift, Anyone have any good ideas or positive feedback, get at me to trouble shoot the issues..
Thank you

 

Anyone?

 

GOT PT codes?

 

No codes, This is a cold start, just got done rebuilding it. Im gonna double check, shift link & neutral switch, before I drop the pil pan. Anyone one else?

 

My bad, pulled P0756 shifft solenoid B performance , stuck off. Will do the search bar research.

 

This job is a done deal. Drop my my oill pan and had notices the shift valve had been put in the wrong way. Put everything back together and its shifting smooth/suave/suavecito. Hell yeah!