tranmission shifting in and out of overdrive

What is your question?

My o1 dodge while driving at steady rpm of 1300 to 1700 the tranny seems to be shifting up nad down. i have had alternator wires rerouted, tranny rebuilt. Some have said the TPS is giving off stray voltage causing the clutch to think it should shift. Somewhere i read about adding a ground wire to the PCM but i did not get a copy of the read. So i am still stuck with my tranny jerking me down the road CAN ANYONE HELP ME