Question about 1999 Chevrolet Silverado 1500
New water pump,thermostat,belt, rad flushed. All hoses get warm except return line from heater core to rad. Only maintains operating temp for a few seconds when thermostat opens then drops to a quarter
Their is a heat control valve that is by the top of the wheel well it works off vacumme if its not working you wont get heat
Posted on Feb 25, 2009
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Posted on Jan 02, 2017
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