2003 Dodge Durango Q&A

2003 Dodge Durango Question: What could cause intermittent Trans. shift issues?

While cruising at highway speeds the Transmission will periodically shift down, then back up, as if on a steep hill. Does it wether the O/D is on, or off, same in cruise control. If I pull over and restart the engine, it solves this about 1/2 the time, but fuel economy has suffered since I developed this issue. I continually monitor the fluid condition and level which is fine. Is this an electrical malfunction? I have been scouring the archives here, and other sites but can't seem to discover much about this. Thank you for the read. Your time and knowledge appreciated. -
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