Jeep Grand Cherokee 2016 — technical service bulletin
Bulletin 21-011-16 · NHTSA communication 10140237 · issued Mar 9, 2016
Technical service bulletin
communication type
Electrical System
component
2016
model years
1
vehicle entries
Official summary
Flash: Transmission Enhancements This bulletin involves reprogramming of the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory: U0404 - Invalid Data Received From Gear Shift Control Module "A". In addition, some customers may experience the following condition: The M on the shifter and Instrument cluster may be blinking.
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.