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March 14, 2024 Service bulletin

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.

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