Jeep Grand Cherokee 2021 — technical service bulletin
Bulletin 9100083 · NHTSA communication 10227681 · issued Oct 7, 2022
Technical service bulletin
communication type
Equipment
component
2021
model years
1
vehicle entries
Official summary
Transfer Case If unable to complete a DTCM flash or calibration process: 1. Perform SOL Publication S2203000004. 2. If flash issue persists, contact FCA Redacted Content. If no response after 15 minutes proceed with repair.
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.