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2001 Chevrolet Blazer Question: coolant temp. sensor



wes121102, Alcoa, TN, April 11, 2009, 19:46

I have a 2001 chevy s10 blazer 2 wheel drive with the 4.3 vortec. I need to replace the coolant temp sensor. Where is this located? Thank you

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  • Answer #1

    April 11, 2009, 20:16

    The Coolant Temperature Sensor or ECT sensor for the gauge is in the drivers side cylinder head between the front two spark plugs. Use care and allow enough time for the engine to cool before removing the ETC sensor. You will need to refill the cooling system.
    Bellow a picture from a repair manual

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    wes121102, April 11, 2009, 21:51

    Thank you very much for your help.

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