Ford F-350 SD 2020–2021 — technical service bulletin
Bulletin 21B42 · NHTSA communication 10199481 · issued Jul 13, 2021
Technical service bulletin
communication type
Suspension
component
2020–2021
model years
7
vehicle entries
Official summary
All of the affected vehicles were built with front spring and front gross axle weight rating (FGAWR) below the customer expected value. The marketing Order Guide stated that on units equipped with Ambulance & Wrecker packages, customers would get up to 7000 lb front spring FGAWR. The front coil springs were built to match the FGAWR labels on these units. The customer did not receive the front coil spring capability they were expecting based on the data in the marketing Order Guide and their reserve capacity might be lower than expected.
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.