Service bulletins for the 2018 Chevrolet Trax
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.
898 on file from NHTSA, as of 2026-10-19.
About U0121 on the 2018 Chevrolet Trax: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
By topic
Only bulletins with trouble code: U0121 are shown. Show all
| 19NA068 | 2020-08-31. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp (MIL) illuminated, intermittent service messages, Erratic Gauges and technician finding DTCs U0073, U0121, U0100 and/or U0101 set. |
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| 19NA068 | 2019-12-16. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp (MIL) illuminated, intermittent service messages, Erratic Gauges and technician finding DTCs U0073, U0121, U0100 and/or U0101 set. |
| 19NA068 | 2019-05-20. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp (MIL) illuminated, intermittent service messages, and technician finding DTC?s U0073, U0121, U0100 and/or U0101 set. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.