Cooling System

Filling the Cooling System, Diagnosing and Replacing Leaking Cylinder Head Gaskets on a 6.6 Duramax Diesel – 2011-2016 Chevrolet & GMC

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2016 Chevrolet Silverado 3500

NHTSA ID Number: 10088863 Manufacturer Communication Number: 16-NA-204   Summary THIS INFORMATIONAL BULLETIN IS A SUPPLEMENT TO THE DURAMAX DIESEL COOLANT SYSTEM FILL AND HEAD GASKET REPLACEMENT PROCEDURE FOUND IN THE SERVICE INFORMATION.   42 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 1500 2011-2016 CHEVROLET SILVERADO 2500 2011-2016 CHEVROLET SILVERADO 3500 2011-2016 GMC SIERRA 1500 2011-2016 … Read more

Cooling System Contaminated With Engine Oil – 2010-2021 Buick Cadillac Chevrolet GMC

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2020 Buick Enclave

NHTSA ID Number: 10198879 Manufacturer Communication Number: 21NA108   Summary This service bulletin provides diagnostic information for the technician regarding a customer concern of engine overheating, cooling system contaminated with engine oil.     Condition Engine is overheating. One or more of the following conditions: Oil in the coolant overflow reservoir Coolant discharging from the coolant reservoir … Read more