Service bulletins for the 2023 Peterbilt 389
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.
53 on file from NHTSA, as of 2026-10-19.
By type
By component
| 45-064 | 2022-11-02. Service bulletin. ENGINE AND ENGINE COOLING. Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic cs hardware to deliver secure software updates remotely. This will reduce downtime and save on maintenance costs for eligible vehicles. |
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| 13-060 | 2022-09-06. Service bulletin. SERVICE BRAKES. The service information for Bendix Air Dryer maintenance is being updated to include new procedures. |
| 56-005 | 2022-08-30. Service bulletin. ENGINE AND ENGINE COOLING. During PTO mode, the engine will not ramp up to the set RPM speed. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.