Dodge Challenger 2015 — technical service bulletin
Bulletin 21-006-15 REVA · NHTSA communication 10150517 · issued Apr 3, 2015
Technical service bulletin
communication type
Electrical System
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 concerns. ? Malfunction Indicator Lamp (MIL) illumination with Diagnostic Trouble Code (DTC) P0734 - Gear 4 Shift Incorrect Ratio set in the TCM memory. ? Harsh or erratic 8-6 downshift during freeway driving. ? Harsh or erratic 6-4 and/or 6-3 downshift during city driving. ? Harsh or erratic upshifts while in Sport Mode. ? Less than desired downshift timing (longer tim
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.