Why Isn't My Heater Working? What are common reasons my Chevrolet Silverado 1500 has heater problems? While there are a variety of reasons your Chevrolet Silverado 1500 heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.What are some of the 2004 Chevy Silverado AC problems?
2004 Chevrolet Silverado AC / heater problems with 32 complaints from Silverado owners. The worst complaints are heater/ac not working properly, blower fan stopped working, and temperature control...Where does the heat come from in a Chevy Silverado?
The heat in the Silverado is supplied by the hot engine coolant running through the engine cooling channels. Some of this coolant is diverted from the cooling system into a heater core.What happens when the thermostat on a Chevy Silverado goes bad?
The job of your Silverado’s thermostat is to regulate the temperature of the engine. It does this by allowing water to enter the engine when it is getting hot, and by keeping coolant from entering while the vehicle warms up. Sometimes when a thermostat goes bad, it stays stuck open. This allows the coolant to continuously enter the engine.