Did you swap out transmission? Were they the same year?
Did you do the check valve delete?
Check the connector on side of transmission as well.

 

the transmission i installed was a 98, truck is a 99..
deleted the check valve, trans cooler installed. i checked all the connections in the tranny.. however i may be time to take out the multimeter.

i will check the pcm connections.. i remember i had a pcm issue with a dakota i owned before, that was a pain..

 

More room in the Ram.

 

pcm connections looked ok, nothing outa the ordinary/burnt.. connections good.
so.. just now i thought of trying a different pcm in there, and remembered i kept my old pcm from my dak.. hopefully i get some info with that.. keep ya'll posted