Question about 2001 Chevrolet Blazer

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Heater blowing cold air replaced thermastat next day heater blowed hot then it started blowing cold again has a new radiator and the water is not low

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Flush coolant system out first with prestone or peak coolant flush if problem still exist replace heater core.

Posted on Apr 05, 2011

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Posted on Jan 02, 2017

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