Service bulletins for the 2022 Ram 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.
476 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Cooling system are shown. Show all
| 9004414 | 2022-12-19. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; FUEL SYSTEM, DIESEL. DRIVE, Fan If a heavy duty diesel vehicle comes in with reports of loud fan noise or fan always on, please call FCA Redacted Content. If no response within 15 minutes, proceed with repair |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.