Ford F-250 SD 2017–2022 — technical service bulletin
Bulletin SSM 49989 · NHTSA communication 10199653 · issued Jul 28, 2021
Technical service bulletin
communication type
Power Train
component
2017–2022
model years
24
vehicle entries
Official summary
Some 2017-2022 F-Super Duty vehicles equipped with four-wheel drive (4WD) may exhibit steering bind or front driveline noise because the hublocks do not automatically disengage immediately following a shift from 4WD to two-wheel drive (2WD). This may be due to driveline tension between the axle and hub keeping them engaged. To correct the condition, shift the vehicle from DRIVE to REVERSE to release the driveline tension. This is a normal operating characteristic of the vehicle and replacement of the hublocks is not recommended. If the concern remains after shifting into REVERSE and allowing t
Vehicles covered
- 2017 Ford F-250 SD
- 2018 Ford F-250 SD
- 2019 Ford F-250 SD
- 2020 Ford F-250 SD
- 2021 Ford F-250 SD
- 2022 Ford F-250 SD
- 2017 Ford F-350 SD
- 2018 Ford F-350 SD
- 2019 Ford F-350 SD
- 2020 Ford F-350 SD
- 2021 Ford F-350 SD
- 2022 Ford F-350 SD
- 2017 Ford F-450 SD
- 2018 Ford F-450 SD
- 2019 Ford F-450 SD
- 2020 Ford F-450 SD
- 2021 Ford F-450 SD
- 2022 Ford F-450 SD
- 2017 Ford F-550 SD
- 2018 Ford F-550 SD
- 2019 Ford F-550 SD
- 2020 Ford F-550 SD
- 2021 Ford F-550 SD
- 2022 Ford F-550 SD
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.