Service bulletins for the 1999 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.
86 on file from NHTSA, as of 2026-10-19.
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By component
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Only bulletins with component: Differential are shown. Show all
| 6622 | 2000-05-11. Service bulletin. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. INFORMATION ON A NEW TRAC-TECH LIMITED SLIP DIFFERENTIAL. *TT |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.