Few weeks ago tranny quit on me in my '02 concorde. Got it home and put in a used replacement. Flushed trans lines, changed filter and filled with correct fluid. Went for a test drive and thought all was well except for a little hard shift into drive. Been driving it for a few days to see what happens and the hard shift went away but now after fluid temperature warms up it shifts back and forth a couple times before it settles into OD. Park it and let it cool off for a while and it shifts great. Switched speed sensors just to see if it helped and it didn't. No codes and I have no other ideas except for the trans solenoid pack.... Any help would be greatly appreciated!!!

 

u need to have a tranny shop do a quick learn