I eventually got to see an intermittent open circuit in one of the shift solenoids.
Bought one locally for $50
pan gasket $10
filter $25
Aisin warner trans number 30-43LE apparently same as A340E like a jeep Cherokee and some toyotas
No check light yet
might set up a manual shift option, steering wheel paddle switches would be cool.
Did have manual toggle switches controlling each shift and lock up during diagnose process, and liked it a lot.