Jeep Grand Cherokee 2021 — technical service bulletin
Bulletin 9100083 · NHTSA communication 10225952 · issued Sep 28, 2022
Technical service bulletin
communication type
Power Train
component
2021
model years
1
vehicle entries
Official summary
Transfer Case Do not replace Transfer Case if unable to complete a DTCM flash or calibration process unless SOL Publication S2203000004 has been performed.
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.