Question about 1987 Chevrolet Monte Carlo
During the summer or a warm day (50-60 degrees F), the heater will not respond to the heater controls, however, during the winter, the heater responds as it should. I have no idea what is happening. Can someone help me out?
There is a vacuum operated water valve on the firewall .. it might be not shuting off completely . You might have to replace this or the switch that shuts off the water to inside or to the heater core thanks Jerry
Posted on Jan 28, 2009
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Posted on Jan 02, 2017
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