Service bulletins for the 2019 Chevrolet Sonic
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.
579 on file from NHTSA, as of 2026-10-19.
About U18AF on the 2019 Chevrolet Sonic: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: U18AF are shown. Show all
| 19NA106 | 2019-07-01. Service bulletin. ELECTRICAL SYSTEM. This Technical bulletin provides a Correction for a Condition of OnStar Red LED Illuminated - DTCs U18B4, U18B5, U18AF Set. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.