Question about 2000 Chevrolet Blazer
There are two rubber hoses, about has big around as a thumb, going into the firewall just above where the front passenger's feet would be. First thing I would check is to see that both are warm after the car warms up. These are the coolant supply and return lines for your heater core. If it is plugged, one will be warm and the other cool. Generally interior heating problem where the engine is otherwise normal will be a heater core issue.
Posted on Oct 05, 2010
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Posted on Jan 02, 2017
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