Service bulletins for the 2021 Chevrolet Spark
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.
452 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 20NA196 | 2020-11-30. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides information and a service procedure for dealers/technicians on OnStar Over the Air Update for TTY / TDD Operation and Continuous Improvement Changes. |
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| 19NA080 | 2020-11-30. Service bulletin. ENGINE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This informational bulletin provides information to the tech to discard the PCV drain tube when working on the lower area of the engine. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.