I have a 2012 Chevy Malibu. When the AC is on it blows through the defrost vent instead of the front. What causes this? Never heard of this happening.

Asked by Jun 30, 2015 at 01:31 AM about the 2012 Chevrolet Malibu LTZ

Question type: Maintenance & Repair

1 Answer

29,085

You likely have a vacuum issue. Probably a hose is off the VENT vacuum motor, or there is a leak at the vacuum distribution plug at the back of the control head. Or there could be a broken vacuum line, or a bad vacuum motor for the vent function.

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