Harsh Transmission Downshift may be Corrected by TCM Software Update on Chrysler Town & Country

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.

RepairPal Verified
Average mileage: 162,500 (135,000–190,000)
1 model year affected: 2003
4 people reported this problem
2 people shared problem details
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!
trans was rebuilt at 110,000 and is now all of a sudden started downshifting while driving down the highway.
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