Jeep Renegade 2021 — technical service bulletin
Bulletin 21-034-21 · NHTSA communication 10204387 · issued Nov 11, 2021
Technical service bulletin
communication type
Power Train
component
2021
model years
1
vehicle entries
Official summary
Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience one or more of the following concerns:Harsh 1-2 or 3-4 upshifts
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.