Jeep Grand Wagoneer 2022 — technical service bulletin
Bulletin 1804422 · NHTSA communication 10229108 · issued Mar 1, 2022
Technical service bulletin
communication type
Electrical System
component
2022
model years
1
vehicle entries
Official summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software.The PCM software update is being released as a generic release to support PCM replacement only in service.
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.