Question about 2005 Pontiac Sunfire

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Heater only blow out the vents

The heater or the ac, either one, only will blow out the vents. I change the controls, to the defrost or to the floor but it never changes anything. Is there an actuator or something else. Please help its getting cold and I need the defrost badly.


Gregg

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There are servos that move air control gates, some were controlled electrically, and some were vacuum. It sounds like there's a vacuum line off the vacuum reservoir under the hood, or a vacuum line has came off one of the servo diaphragms.

Posted on Dec 16, 2008

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I had same problem with my sunfire. through the passenger side look under the dash where the controls are for the heat and ac. when you turn the nob to change from floor to vent etc. you should see the rod move back and forth. you should also see a white plastic lever that the rod attaches to. the hole is probably wore out. it will need to be replaced if you cwn get it done for cheap. i tried to fix mine myself and ended up breaking it. good luck

Posted on Dec 16, 2008

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