Service bulletins for the 2022 Chevrolet 4500HD
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.
319 on file from NHTSA, as of 2026-10-19.
About P2201 on the 2022 Chevrolet 4500HD: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P2201 are shown. Show all
| N242469060 | 2024-08-07. Service campaign. UNKNOWN OR OTHER. Certain vehicles may erroneously experience an illuminated Check Engine Malfunction Indicator Lamp (MIL) with Diagnostic Trouble Codes (DTC) P2201 NOx Sensor Circuit Performance Sensor 1 and/or P20EE Diesel Exhaust Fluid (DEF) System NOx Trap Low Efficiency. Dealers will reprogram the ECM and/or the DCU with the corrected service calibrations. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.