While there are a variety of reasons Your Chevrolet Sonic 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. The heating system in Your vehicle is designed to keep You warm, comfortable, and safe when the temperature outside is cold. The engine cooling system in the vehicle is directly related to the function of the heating system. An internal combustion engine produces heat when it operates due to friction and combustion.The main benefit of setting the thermostat to 'Auto' is that it will result in more energy efficient usage. This is because the fan will run only when it's required. Also, the air filter will need to be changed or cleaned less frequently when the thermostat setting is set to 'Auto'.
I’ve had to replace blower motor and the thermostat
Robert K.
April 10, 2020
While there are a variety of reasons your chevrolet sonic 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.
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