Chrysler 300 2015 — technical service bulletin
Bulletin 21-022-15 · NHTSA communication 10150525 · issued Apr 10, 2015
Technical service bulletin
communication type
Power Train
component
2015
model years
2
vehicle entries
Official summary
Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience one or more of the following conditions. These conditions are only applicable on LD models. ? Less than desired upshift performance during Wide Open Throttle (WOT) accelerations. ? Less than desired overall downshift performance during coasting deceleration, braking, or while passing. In addition to the above conditions, this software release also enables the capability to capture Electro
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.