Chevrolet Impala Limited overheating issue due to suspected small radiator leak and coolant loss on Chevrolet Impala Limited

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Chevrolet Impala Limited owners report experiencing overheating issues due to suspected small radiator leaks and coolant loss. Common signs of a coolant leak include an overheating engine, decreased coolant levels, white smoke, and colorful liquid puddles under the vehicle. Overheating while idling can stem from various factors such as coolant leaks from the water pump, hoses, or radiator, malfunctioning thermostats, or radiator fan issues. Frequent causes of coolant leaks in the Impala include loose hose connections, broken radiators, or failed water pumps. Even minor leaks can significantly impact the cooling system's efficiency, leading to engine overheating. To address these issues, owners are advised to check coolant levels after allowing the car to cool, and to bleed air from the cooling system to prevent overheating caused by air pockets. Promptly managing these concerns is crucial to avoid further damage to the vehicle.

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