Service Update
Chevrolet technical service bulletin A222379710 for 2021-2023 Chevrolet Trailblazer and 2020-2023 Buick Encore GX.
- Bulletin number
- A222379710
- Component
- Engine and engine cooling
- Summary
- Service Update. In certain vehicles, if the Engine Control Module (ECM) sets the DTC P0521 (Engine Oil Pressure Sensor Performance), the ECM cannot clear the permanent status of this DTC. If the ECM had previously set a DTC P0521 and the permanent status is not properly cleared, the vehicle may not pass certain Emissions Inspection/Maintenance (I/M) tests. Dealers are to reprogram the ECM.
Owners of these vehicles have filed 131 complaints in the engine category.
Vehicles covered
- Chevrolet Trailblazer 2021-2023 202120222023
- Buick Encore GX 2020-2023 2020202120222023
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