Car is making clicking noise were heat is on dashboard. And now only heat works on driver side of car.
My Chevy Impala does the same thing I plays with the heat control levels and then it'll stop and my daughters does the same and she has a 2011 Chevy Impala
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The clicking is most likely from a bad mode or blend door actuator. A mode/blend door is a little plastic flap in the heater box or vents that direct air to the various vents. (the blend door directs incoming air across either the AC evap coil or heater core to give you hot or cold air.) When the actuator that moves these doors fail, they tend to click (they're just little geared motors), leaving the door stuck in whatever position it was last in. The only way to fix them is to open up the dash to access them and replace them with new actuators.
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