Service bulletins for the 2021 Ford F-550
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
237 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Wiring and fuses are shown. Show all
| 21M05 S3 | 2022-12-02. Service bulletin. LATCHES/LOCKS/LINKAGES:FUELING/CHARGING DOOR/HATCH/PORT:LATCH/LOCK RELEASE SYSTEM; UNKNOWN OR OTHER; ELECTRICAL SYSTEM:WIRING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Certain 2017-2022 Model Year Super Duty Vehicles Equipped with a Power Release Tailgate - Unintended Tailgate Opening REASON FOR THIS SUPPLEMENT Technical Information: Updated with revised instructions to account for wiring harness changes that were implemented into production and changes to the tailgate latch control assembly removal and installation procedures. As a result, the Labor Allowances and Parts Requirements / Ordering Information have also been updated accordingly. Parts Requirements/Ordering Information: All parts are on open order. Special Service Support Center (SSSC) contact is no longer required to order tailgate actuator ground wiring kit. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.