Brian, check battery connections. Make sure they are clean and secure. Have a tech put a scan tool (Pro-link) on it to see if it's logging any codes. I usually "reset unadapted shifts" and "activate fast adaptive", then drive the vehicle.. This lets the ECU re-learn the shift points, almost like re-setting it. I use my Pro-link to do this. I see this condition on occasion ,after we have removed and installed another trans, or replaced an ECU (trans computer).
Hope this might help you. Good luck.
Interesting. I have had to recharge the batteries three times in recent weeks. One time, the batteries were down to 1 volt. I had to disconnect each battery and charge them seperately.
I will see if C&J has a scan tool that can do this for me.