Shifting normally when shifted manually points more toward an electrical issue. Since you recently performed major repairs, the logical starting point is confirming everything is correctly installed, correctly connected, and that no wires or components were damaged during the work.
Consider a used TCM from the junkyard as they cannot be easily tested. Otherwise, test and inspect for faulty/damaged transmission sensors, speedometer sensor, Neutral Safety Switch (NSS), or damaged wires.
Progressive Liberalism: Bringing you new ideas so wonderful, they have to include mandatory participation ......
Originally Posted by Ronald W. Reagan: Government is not the solution to our problem; Government is the problem.