Question about 2003 Chevrolet S-10

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Heater core is clogged, not hot heat coming out.

Dealer wants 300 bucks to fix. sounds rediculous considering its just a power flush of the system.

HOw do I fix a clog in my heater core at home??

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  • yadayada
    yadayada May 11, 2010

    doesn;'t sound out of line to this tech, you have to flush the whole system or you can't warranty the job, what caused all the rust?

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You can try to flush it out by removing both heater hose going into the core and coming from the core. Hook a garden hose to the hose going in and then try flushing the hose going out. Normally once a heater core is clogged there is only the option of replacing it.

Posted on Oct 08, 2009

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