Jeep Grand Cherokee 2019 — technical service bulletin
Bulletin 18-018-19 REV. A · NHTSA communication 10168439 · issued Oct 5, 2019
Technical service bulletin
communication type
Power Train
component
2019
model years
1
vehicle entries
Official summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience the following condition:Actual fuel economy reporting may not match the Instrument Panel Cluster (IPC). Other software enhancements:Calibration update to address EVAP system emissions monitor readiness status accuracy(WK vehicles only).
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.