Ford F-250 SD 2024 — technical service bulletin
Bulletin SSM 54122 · NHTSA communication 11021804 · issued Aug 8, 2025
Technical service bulletin
communication type
Suspension
component
2024
model years
4
vehicle entries
Official summary
Some 2024 F-Super Duty non-Tremor vehicles equipped with four-wheel drive (4WD) may exhibit a slight rotational grinding noise from the front axle while driving in two-wheel drive (2WD). If the noise does not occur with the vehicle driven in 4WD, this may be due to the non-selectable right side hublock on the front axle. To correct the condition, replace the right front hublock with a selectable hublock, service part number PC3Z-3B396-A. Refer to Workshop Manual, Section 307-07A. Vacuum lines with service base part numbers 3C125 and/or 3C124 may need to be installed if not present on the vehic
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.