The car is designed with a duel control temp. control system. I do not get
any heat out of the driver side heater or defrost. I tried to remove the
pit cock from the radiator so I could drain the radiator and flush out the
cooling system and replace the thermostat, but I could not get the plastic
plug out of the bottom of the radiator. Why?
you have to pull down on pitcock after rotating......every dual zone i have
ran into w/your symptoms has came down to the control unit in the
dash...havent seen your particular vintage and model tho. just impalas.....
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