Chrysler 300 2013 — technical service bulletin
Bulletin 21-028-14 · NHTSA communication 10139742 · issued Sep 17, 2014
Technical service bulletin
communication type
Electrical System
component
2013
model years
2
vehicle entries
Official summary
Flash: Transmission Shift Enhancements This bulletin involves selectively erasing and reprogramming the Transmission Control Module (TCM) with new software. The following Transmission Control Module (TCM) calibration improvements are available for vehicles equipped with WA580 Automatic Transmission (Sales Code DGJ) and are broken down per engine application.3.6L Engine Hanging in gear during HOT ambient temperature conditions and high engine loads. Excessive pedal needed to downshift in high altitudes (i.e. passing). Poor shift quality, or high transmission temperatures during track or sport d
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.