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