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November 6, 2020 Service bulletin

This technical bulletin provides repair information to correct a customer concern of the Service Engine...

Chevrolet technical service bulletin 20NA071 for 2019-2021 Chevrolet Blazer, 2017-2021 GMC Acadia and 2018-2021 Chevrolet Traverse and others.

Bulletin number
20NA071
Component
Engine
Summary
This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp illuminated and/or Service Power Brake Assist message displayed, with DTCs P0557 or P0558 Stored.

Owners of these vehicles have filed 778 complaints in the engine category.

Vehicles covered

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