Question about 1998 Chevrolet Blazer

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What does it mean if the heat is blowing out cold air?

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A list of things to check
1) check both heater hoses coming out of the firewall to see if both are hot, if one is cold try flushing out the heater core, than do a back flush, if that dont work check temp guage on the dash, temp guage is low, change thermostat, check for coolant leaks

Posted on Oct 03, 2010

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