Why is front heater not working on 2002 chevy tahoe

ID Status Date Year Make Model Transmission Type A/C Controls Public/Private
#15063 Closed 2002 Chevrolet Tahoe public

Front heater quit blowing hot air and only blows cold air while back heater blows hot air


The very first thing to check is the coolant level. The front heater core is the highest component in the system and the first to empty if the level goes low. After that the operation of the blend door actuator(s) should be checked.

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