Service bulletins for the 2021 Chevrolet Trailblazer
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.
753 on file from NHTSA, as of 2026-10-19.
About P0011 on the 2021 Chevrolet Trailblazer: 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: P0011 are shown. Show all
| A202304840 02 | 2022-06-13. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Service Update Bulletin. Certain vehicles may have a condition where the camshaft actuator oil control valve (OCV) center bolt could stick or bind. If this were to happen, it could cause a MIL light to illuminate on the dash (Service Engine Soon), setting diagnostic trouble codes (DTC?s) P0011 or P0014, the engine could run rough and have reduced power. Dealers will inspect for these DTC?s that could have been set by this condition, and repair vehicles that fail the inspection. |
|---|---|
| A202304840 01 | 2022-02-07. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE. Service Update. Certain vehicles may have a condition where the camshaft actuator oil control valve (OCV) center bolt could stick or bind. If this were to happen, it could cause a MIL light to illuminate on the dash (Service Engine Soon), setting diagnostic trouble codes (DTC?s) P0011 or P0014, the engine could run rough and have reduced power. Dealers will inspect for these DTC?s that could have been set by this condition, and repair vehicles that fail the inspection. |
| 20NA151 | 2020-08-31. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to correct conditions of Engine Idle Unstable, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0011, P0014, P0016, P0017, P05CC and/or P05CE Set. |
| A202304840 | 2020-07-20. Service bulletin. ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. SUB - Certain 2020-2021 Buick Encore GX and 2021 Chevrolet Trailblazer vehicles may have a condition where the camshaft actuator oil control valve (OCV) center bolt could stick or bind. If this were to happen, it could cause a MIL light to illuminate on the dash (Service Engine Soon), setting diagnostic trouble codes (DTC?s) P0011 or P0014, the engine could run rough and have reduced power. Dealers will inspect for these DTC?s that could have been set by this condition, and pass or fail based on results. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.