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How do you find and clean the coolant sensor - dashboard light indicates low coolant which is not true?

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Low Cooland Light On With Full Radiator

The coolant sensor is located on the radiator about 6 inche directly below the radiator cap on the engine side of the radiator. Remove the battery to gain access to the sensor. Release the spring clip holding the sensor and gently twist and pull the sensor out of the radiator. Disconnect the wire harness to remove the sensor from the car. Dirt may not be the problem. The sensor electronics are "potted". The potting may have have cracked allowing coolant to short out the sensor. I recommend replacing with a GM brand sensor rather than the available Standard brand name. Wholesale pricing of both is about the same and the GM part is more reliable.


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First answer by ID403241308. Last edit by ID403241308. Question popularity: 14 [recommend question]

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