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The vents will not open all the way so the air will blow out. The fan is blowing fine it just is not all blowing out into the truck cab just a little air comes through

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It sounds like your blower blend door, (usually located under the dash by the floor on the passenger side. the door is usually actuated by vacuum hoses that tie into the engine manifold. You can trace out the hoses see if they have cracked or are disconnected

Posted on Jul 19, 2009

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My A/C used to blow out very cold and with lots of force at the vents, now I get cold air but you can barley feel the air coming out of the vents. The fan sound like it is on high but very little airflow....


It sounds like you have a blend door issue.Try cycling the air to blow on different parts of the cab ie: defrost,to floor to vent.if you have cold air blowing good on all selections and you know your motor is working on all speeds,then you have a blend door not opening.The control for that is behind the heater/ac control unit.They do go bad from time to time.You can pick up a replacement at either a dealer or a Auto Parts place that sells GM or AC DELCO parts.

Aug 23, 2011 | 2002 Chevrolet Silverado 2500HD

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A/c works fine in the morning, blows out vents at 55* - 59*. later in the day, and as it gets hotter outside, a/c blows hot air. What's up?


could be slightly low on charge-or cooling fan is not working-as the temp outside goes up the ac needs to be more efficent to blow cold air--and really 55 is not that cold--depending on outside conditions should be able to blow at low to mid 40 s

Aug 16, 2010 | 2003 Ford F250 Super Duty Crew Cab

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Air not blowing through vents


Most likely the louver doors that control were the air comes out are frozen in place. or there is a vacuum leak that will not allow enough vacuum to move the doors. I hope this helps please rate this thank you

Mar 02, 2010 | 2002 Ford F250 Super Duty SuperCab

1 Answer

04 silverado a/c, htr. controls. Only blows through defrost vents


sounds like your door blend actuator which is under the dash and a pain in the **** to replace

Feb 20, 2010 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

A/C works fine, the blower's fine, replaced thermostat, no heat.


If you don't hear a thud or noise of a flap opening or closing when switching between hot and cold then a lever is probably broken.

Oct 18, 2009 | 1998 Chevrolet S-10 Pickup

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The fan sounds like it's blowing but little air comes out.


The A/C blender doors on the 2006 Ram are defective and are prone to breaking. Call your local dealer and ask them if they've heard of this problem. My truck had the same issue and Dodge repaired it under warranty. Good luck.

Aug 19, 2009 | 2006 Dodge Ram 1500

1 Answer

Just had my heater core replaced and do not see much difference.


the unit were you turn on the fan leaks vacuum which causes the vents not to blow properly the unit is not expensive for it is plastic comes with fan switch ex..

Feb 24, 2009 | 1995 Chevrolet Blazer

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