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.
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.