Question about 2003 Chevrolet Trailblazer Ext

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How do I fix a coolant fan overspeed?

My service engine light came on and the code says it is a coolant fan overspeed. How do I fix this?

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  • jacquelyn_di Oct 07, 2009

    OK. Once I locate it what do I do?

  • Anonymous Mar 19, 2014

    I want to disable the overspeed beep that sounds at 120 kph and above

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  • 136 Answers

It`s your cooling fan relay look in your owners manual to locate wher it`s @

Posted on Oct 07, 2009

  • Ross Clifton Oct 07, 2009

    take it to your dealership and buy a new one

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