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heater blowing cool air. new heater core installed last year.
Problem for GMC 2001 Jimmy
My 2001 GMC Jimmy is not blowing warm/hot air.
Best Solution
posted on Nov 06, 2009
Let the vehicle warm up to normal operating temprature, touch the heater hoses going into the firewall to the heater core, they should both be hot, if only one is hot the heater core is stopped up. If this is the case you will want to try flushing it before you replace it. If you have to replace it be prepaired to spend $400.00 or more depending on shop rates. NOTE: BE CAREFULL WHEN CHECKING HEATER HOSES YOU COULD GET BURNED! Thanks and good luck with your repair.
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Solution #2
posted on Nov 22, 2009
is not the heater core is the heater valve that is seized.replace the heater valve a
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