# 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 bulletins from NHTSA, as of 2026-10-19.

- [42\-070](/bulletins/11038569.md), 2026-10-17, Service bulletin: UNKNOWN OR OTHER. Due to supplier constraints, an authorized aftermarket surge tank has been made available.
- [P001](/bulletins/11037541.md), 2026-09-29, Service bulletin: ENGINE. "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
- [E334](/bulletins/11027061.md), 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.
- [32\-025](/bulletins/11010926.md), 2024-12-03, Service bulletin: ENGINE. Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting issues. A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system checks, which should reduce unnecessary starter replacements and associated warranty claims. Engine starting system warranty claims now require a completed Starter Checklist, a Battery Pack Midtronics Report, and a Cable Drop Midtronics Report. Claims filed without these documents may be denied.
- [CE019](/bulletins/11005569.md), 2024-08-03, Service bulletin: ENGINE. 07/24/2024 \- Updated the Emissions Warranty Coverage tables. Added new coverage tables and PartsLists for GHG/Vehicle Parts and ZEP/BEV Parts. 03/07/2022 \- New Emissions bulletin which consolidates older versions and accounts for new CARBemissions requirements that go into effect with Engine Model Year 2022.

JSON: [/v1/vehicles/2022_peterbilt_320/bulletins](/v1/vehicles/2022_peterbilt_320/bulletins)

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