Ford F-250 SD 2020 — technical service bulletin
Bulletin SSM 48761 · NHTSA communication 10174423 · issued Apr 23, 2020
Technical service bulletin
communication type
Power Train
component
2020
model years
4
vehicle entries
Official summary
Some 2020 F-Super Duty vehicles equipped with a 6.2L or 7.3L gas engine and a 10R140 transmission may exhibit an intermittent buzz noise coming from the transmission while the vehicle is in transport mode. This condition is most noticeable with the vehicle in PARK or NEUTRAL and at elevated idle speeds of 850 to 1250 revolutions per minute (RPM). This condition is a normal characteristic while in transportation mode and will be eliminated once the vehicle is placed into normal mode prior to customer delivery. Do not attempt to repair.
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.