Service bulletins for the 2022 Chevrolet 4500
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.
301 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 19NA104 | 2021-12-27. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This service bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.