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1999 Chevrolet Silverado 1500 Question: Heater will only blow cold air. Why will it not get hot?

 

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tomcat500, Brownsville, TN, October 19, 2011, 04:53
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It got hot last winter but when I tried it this year it will not get hot. Engine temp is running 190 and there is no sign of anything being wrong like leakage from heater coil or anything. Air conditioner works fine and Fan works fine.

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  • Answer #1

    mastertech6371 October 19, 2011, 07:12
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     Master

    core could be clogged with debris. blend door motor may be bad as well. take it to a shop and have them check it for you and give you a bid.

    Roy

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  • Medium-star Best Answer
    This Dude January 05, 2014, 11:44
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    I had that problem..took off the hoses and blew compressed air through core in reverse direction as water several times and now it works. Found that on you tube

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