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How do you know the heater core is hot? check the radiator surge tank. I bet its empty. next look down by the thermostat and see if your intake gaskets are leaking coolant. now you are where im at. I just bought a new set of gaskets for my 2002 and am online surching for torque order and values.

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โˆ™ 2005-12-30 16:39:04
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Q: Why would a Pontiac Grand Am GT with a new thermstat have cold air coming out of the defogger and the heater core getting hot?
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