So he tore the pump gasket and didnt have another?? I guess if it starts leaking you will know why

I woould double check the wire harness and verify no pins are bent corroded and fulley plugged in

And I wonder if the internal wire harness got plugged in right or got pinched or something. Might have to pull the pan off.

I think its a F**kup on the rebuilers end of things

IMO you should have been able to install it fill with tranny fluid and let it idel fill everything up with fluid and GO

that sucks hope you dont have to pull it back out