2001 Grand caravan. Dropped the pan and changed the filter of the transmission. It now shifts fine into all gears and shifts fine down out of all gears but overdrive. It is slow to shift out of overdrive and when it does finally downshift it shifts hard and at a low rpm almost stalling the engine.

Fluid level is fine. Cleaned lots of goop from tranny pan, and metal shavings from magnet, but no chunks. Looked like normal wear, just hadn't been serviced in a while.

 

Check the sensore make sure they are good
And disconnect the ground for awhile see if that works