Service bulletins for the 2014 Peterbilt 579
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.
56 on file from NHTSA, as of 2026-10-19.
By type
By component
By topic
Only bulletins with component: Headlights are shown. Show all
| 15-17 | 2018-04-02. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH. Fix-As-Fail - Low Beam Headlamp Bulb Diagnosis (Inspect Bulb and Connector) |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.