This is from today. Seems like any more than 30 min of driving now and this occurs. Idle will be anywhere from 1K to 3K. I tried lightly tapping on all sensors when it started (maf, map, iac, tps,ait...) to see if anything changed. Nothing. Unplugged sensors one at a time..no change. Unlugged all sensors...no change. Not even a CEL. Even unplugged the EGR.
Stopped and spent a couple of hours on the beach. Fired right up, idled and shifted fine for about a half hour.
Here's a vid of the erratic shifting.
https://youtu.be/VmKVkOBIA_s
12-24 sec mark and 1:16 to end.