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2001 Chevy Tahoe heater core connection broke a few months back change them out heater blowing lukewarm air someone told to flush heater?
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- HumveetechLv 74 years ago
Air pockets like Jethro said. Flushing out usually fixes nothing, if it is a restriction usually means heater core replacement
- J E T H R OLv 74 years ago
Could have and air bubble in it or it may need a thermostat, Your temp gauge should be up near 200* too have a hot heater.
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