[Killa_Kev]

I did the 3.5 swap yesterday. it runs fine and everything but when i drive my car(auto) it shifts fine tell it goes into 3rd and 4th, i get the P0734 (Gear 4 Incorrect ratio) and the N lights up and flashes 1 time a second. i cant figure out why the transmition would be doing this. i put transmition fluid in and its at a perfect level right at the hot line.

any ideas ???