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Q: Car heater is blowing cold air.
on 2002 Buick Regal

Car is not overheating. No wet passenger floor. No smell. 1 hose coming thru the firewall is hot and 1 is cold. Blower is working.
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Your heater core needs to be flushed, the coolant flow is restricted, and heater core will not get hot for the heating system to work properly.
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