Emission Recall
Chevrolet technical service bulletin A222379711 for 2021-2023 Chevrolet Trailblazer and 2020-2023 Buick Encore GX.
- Bulletin number
- A222379711
- Component
- Engine and engine cooling
- Summary
- Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles. The Engine Control Module (ECM) may not clear the permanent status of DTC P0521 (Engine Oil Pressure Sensor Performance). 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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