Ford F-250 SD 2020–2021 — technical service bulletin
Bulletin TSB 21-2057 · NHTSA communication 10189776 · issued Mar 4, 2021
Technical service bulletin
communication type
Fuel System, Gasoline
component
2020–2021
model years
8
vehicle entries
Official summary
Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L engine built on or before 10-Feb-2021 may exhibit a thump/whine/knock noise from the fuel tank at idle or during key on, engine off (KOEO). The noise may be more pronounced at fuel levels at or below 1/4 tank. This may be due to the fuel pump strategy in the powertrain control module (PCM) software. To correct the condition, follow the Service Procedure to reprogram the PCM.
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.