Service bulletins for the 2022 Peterbilt 320
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.
5 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with type: Emissions are shown. Show all
| E334 | 2026-01-06. Emissions. ENGINE. Certain vehicle model year 2022 Kenworth chassis equipped with Engine Model Year (EMY) 2021 PACCAR MX engines may have an exempt engine label installed. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.