Jeep Grand Cherokee 2024 — technical service bulletin
Bulletin 21-049-24 · NHTSA communication 11007948 · issued Sep 17, 2024
Technical service bulletin
communication type
Power Train
component
2024
model years
1
vehicle entries
Official summary
"Flash: Transmission Control Module (TCM) Updates Customers may comment on one or more of the following: ● Vehicle shifting is erratic and/or engine RPM holding too high in one gear. ● Harsh 2-1 shift (bump) when coming to a stop. This bulletin involves reprogramming the TCM with the latest available software."
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.