black4x4

iTrader: (3)

I recently pulled my 4l60e apart and replaced the clutches and steels in it and when I reassembled it I ran into a problem. it has park, neutral, reverse and only one forward gear. when shifting up through the gears it never changes gears no matter what gear is manually selected. Anyone have any ideas on what could be causing this?

trans has trans go hd3 kit in it that worked fine before dissemble also has a fresh 4000 stahl converter in it.