Question about 1999 Chevrolet S-10 Pickup

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1999 S10 Chevy truck

How do I replace the heater core and where is it in the truck???

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  • Anonymous Oct 19, 2008

    no heat when heater is turned on.

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You may not need to. I had the same problem. I had my heater core flushed. It had all kinds of black goo in it and now it works fine. I flush it myself about once a year now.

Posted on Jan 30, 2009

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You will have to remove the dash assembly and then the heater/a/c box it is in the hvac module.

Posted on Oct 02, 2008

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