Chrysler 300 2015 — technical service bulletin
Bulletin 21-020-15 · NHTSA communication 10144867 · issued Mar 31, 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 concerns. These concerns affect vehicles equipped with a 6.4L engine (sales code ESG) and 8HP70 automatic transmission (sales code DFK) only. ? Inconsistent 1-2 upshifts when first shifting after a cold soak or in colder ambient temperatures. ? Delayed engagement when shifting from reverse to drive. In addition to the above conditions, this software release al
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.