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July 27, 2023 Service bulletin

Special Coverage

Chevrolet technical service bulletin N232395310 for 2021 Chevrolet Silverado 1500, 2021 GMC Sierra 1500 and 2020 Chevrolet Blazer and others.

Bulletin number
N232395310
Component
Engine and engine cooling: exhaust system: emission control
Summary
Special Coverage - Certain vehicles may have a condition that could cause the evaporative emissions purge pump to fail. If this condition occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate and a diagnostic trouble code will set. Dealers are to replace the evaporative emissions purge pump as necessary. The repairs will be made at no charge to the customer. The repairs will be made at no charge to the customer.

Owners of these vehicles have filed 1,033 complaints in the engine category.

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