Dodge Challenger 2013 — technical service bulletin
Bulletin 21-035-15 · NHTSA communication 10148932 · issued May 27, 2015
Technical service bulletin
communication type
Power Train
component
2013
model years
4
vehicle entries
Official summary
Flash: Transmission Shift Enhancements This bulletin involves selectively erasing and reprogramming the Transmission Control Module (TCM) with new software. The customer may experience one or more of the following: Grand Cherokee/Durango 3.6L Engine (Sales Code ERB) ? Erratic shifting complaints while driving up steep hills or towing during hot ambient temperature conditions. ? Transmission shifting does not meet customers expectation while towing a loaded trailer in high ambients (>32°C/90°F). ? Poor performance and/or poor powertrain response when trying to accelerate from speeds >58 kph (36
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.