Heater

Asked by GuruV2M3X Sep 11, 2018 at 01:38 PM about the 2006 Chevrolet Monte Carlo LTZ FWD

Question type: General

The blower motor on my heater keeps blowing
through the AC vents will not go to defrost or to the
floor

1 Answer
103,465

KenF answered 6 years ago

You have an inoperative mode door. Three things can be wrong: 1) actuator went bad (this is the most likely cause), 2) the plastic flap is stuck or jammed, or 3) loss of electrical power or signal (bad switch or module, depending on how mode doors are controlled in your vehicle).

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