Jeep Grand Cherokee 2017 — technical service bulletin
Bulletin 21-002-17 REV. A · NHTSA communication 10138906 · issued Jun 9, 2017
Technical service bulletin
communication type
Power Train
component
2017
model years
1
vehicle entries
Official summary
Flash: Transmission Diagnostic and Shift Enhancements This bulletin involves reprogramming 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:P1DCD-00 - TCM Monitoring Processor Performance Multiple Clutches Locked Up. In addition, customers may also experience the following condition:During an engine limp mode condition, the transmission remains in a fixed gear. This update a
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.