Ford F-250 SD 2023–2024 — technical service bulletin
Bulletin TSB 25-2341 · NHTSA communication 11020976 · issued Jul 25, 2025
Technical service bulletin
communication type
Engine
component
2023–2024
model years
8
vehicle entries
Official summary
Some of the vehicles listed in the Model statement above may exhibit a roaring fan noise from under the hood at highway speeds with either a hot or cold engine. This may be due to a condition where the engine cooling fan clutch remains fully engaged when not commanded.
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.