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RecallGazette

Vehicle problems, recalls & safety intelligence

Chrysler 300 2015technical service bulletin

Bulletin 21-023-15 · NHTSA communication 10150529 · issued Apr 14, 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 of the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) Illumination. Upon further investigation, the technician may find Diagnostic Trouble Code (DTC) P0734 - Gear 4 Shift Incorrect Ratio stored in the TCM memory.

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.