Dodge Challenger 2015 — technical service bulletin
Bulletin 21-006-15 REV-B · NHTSA communication 10148957 · issued Aug 5, 2015
Technical service bulletin
communication type
Power Train
component
2015
model years
1
vehicle entries
Official summary
Flash: 845RE Transmission Shift 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 Symptom/Condition(s) and/or a Malfunction Indicator Lamp (MIL) due to an erroneous Diagnostic Trouble Code (DTC): ? P1DCD - TCM monitoring processor performance multiple clutches locked up. ? P1B13 - Park-By-Wire unintended out of park position. ? P0734 - Gear 4 Shift Incorrect Ratio set in the TCM memory. ? Harsh or erratic 8-6 downshift during freeway driving. ? Harsh
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.