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Chevy Blazer S-10

Why would air come out of the defroster when using the AC-heater but not from the front vents?

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2004-06-26 23:27:14
2004-06-26 23:27:14

Because of a vaccume leak or a bad accuator for the blender door. but usally it is a cracked or disconnected vaccume hose - mostly the vac hose from the intake manifold 2 the vac T that goes inside the car.

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