Jeep Grand Cherokee 2017 — technical service bulletin
Bulletin 18-057-17 · NHTSA communication 10138907 · issued Jun 9, 2017
Technical service bulletin
communication type
Power Train
component
2017
model years
1
vehicle entries
Official summary
Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. The following software enhancements are available:Allow the throttle body to be cycled while the engine is off, for diagnostic purposes. Improved vehicle acceleration at low speed while towing. Allows transmission gear shifting while in limp-in mode, rather than a fixed gear.
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.