Ford Bronco 2021–2022 — technical service bulletin
Bulletin TSB 22-2371 · NHTSA communication 10228746 · issued Dec 14, 2022
Technical service bulletin
communication type
Power Train
component
2021–2022
model years
2
vehicle entries
Official summary
Some 2021-2022 Bronco vehicles equipped with a MT88 manual transmission may experience a rotational scraping noise in ambient temps below 10C (50F) and after a cold soak with the transmission in neutral, 1st and/or 2nd gear and clutch engaged. The noise may go away as the transmission warms up. This may be due to the 5th and 6th gear synchronizer rings. To correct the condition, follow the Service Procedure to replace the 5th and 6th gear synchronizer rings.
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.