If you experience a harsh downshift from fourth to third gear, the transmission control module (TCM) software should be checked and updated if necessary before any other repairs are performed.Google+
Car Problem Reports
Chrysler Town & Country Updated TCM Software Available for Harsh Downshift
Chrysler Town & Country Problem
Model Year Affected: 2003
Average Mileage: 162,500 mi (135,000 mi - 190,000 mi)
Visitor, 2003 Chrysler Town & Country, 135,000 mi
My 2003 T&C Limited 3.8L V6 started down shifting from 4th to 3rd gear harshly on deceleration. This started out of the blue. It only has a hard shift from 4th to 3rd tho... NEED HELP!
Visitor, 2003 Chrysler Town & Country, 190,000 mi
trans was rebuilt at 110,000 and is now all of a sudden started downshifting while driving down the highway.