walkdmc

I just finished a rebuild on a 4l60e. Reverse works, manual 1st works and manual 2nd works. No activity at all in Drive it’s the same as Neutral. I can get it up to speed and go into 3rd manually, but when I switch into Drive again nothing.

What are possible causes that could keep it from not engaging Drive?

My thoughts on possible causes:
I packed the check ***** with Transjel to keep them in place; will I need to let the transjel dissolve first, a check ball is out of place, a problem with a solenoid, or maybe a problem with the pressure switch.

Any help would be appreciated.

Jays_SSZ28

iTrader: (2)

Input sprag in backwards.

walkdmc

Thanks Jays_SSZ28, it was the forward input sprag. I reversed it and everything is good.