Question about 2001 Chevrolet Blazer
If the engine is not running hot then the pump is working. If the hose going to the heater core is not hot whenever the engine is at normal operating temp then the more likely solution is an obstruction. The best way to clear this is to dissconnect both the hoses going to the core at the firewall, then take a waterhose with nozzle attached and apply the pressure to one hose then the other. This should fix it.
Posted on Mar 03, 2009
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Posted on Jan 02, 2017
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