Any one know what I need to do to fix this problem? Please HELP. The dash vents are the only vents that work. If you have air flowing only through the vents with no defrost or floor, this door is failing. The main vent of the vents that faces the passengers blows out nothing. Replaced a small curve hose that was cracked going to another valve near the Egr valve. Reply. Having the same problem, regardless of the position selected, air will only flow through dash registers. There is just no air from floor vents or defroster. December 12, 2016. ... AC/Heat Only Blows out Dash Vents. I can three of four actuators, but I cannot locate the defrost actuator, it appears by following some wires, that it is on the top of the dash on the drivers side. 2002 Buick LeSabre. The air only blows through the front defrost vents, the back air works fine. After doing some research, I've tried resetting the HVAC system by temporarily pulling the fuse. ... works. No effect. Air Conditioning will not blow out of front vents on Buick Rainier Problem Description Owners have reported several instances of the air conditioning not blowing through main dash vents, or only blowing through the floor and defrost vents. Air only blows out of front vents (not from bottom heater or defroster. My tundra ac is working but it only blows through the defrost vents. What could that be? RE: AC/heater only blows out defrost vents IP: Logged Message: I have a 2002 Dodge Dakota - 3.9 L and in June of 2007 I had only air coming out of my defrost vents, so I had the vent control motor replaced and it was working great, until about a week ago now the air is only coming out of my defrost vents again. The blower doesn't have any obvious damage and the front floor and rear vents … I can switch it from hot to cold no prob. Heater working but only blows out front vents. Most of the hose were wrapped in that plastic conduit. It blows hot air so I don't think there is anything wrong with they heating system. My blower speed works fine. I am only getting air to come out of the front vents of the dash. On all settings it only comes out of the defrost vent. 06 2wd conversion, stock. I am not getting any air coming out of my front vents. There's no/little air coming from the front dash vents on my wife's 2011 Acadia regardless of how the system is set. when changing from ac blowing to the face and leg to defrost u can here it switch but no ac comes out of the front vents. I have a 2007 Dodge Grand Caravan. Front vents don't blow any air out. Before replacing Heater Control Unit, it would only blow hot air from front vents- With this replacement it will now change from cold to hot and the air flow pressure does change from the front vents when changing the setting dial but there is still no air at all to feet and defrost. The air won't blow out the dash vents. It blows out the floor vent and the defroster vent, but it won't change and blow out the dash vent. Save Share. No heat to feet or defrost. Asked by genurko in Parlin, NJ on . Years ago this was controlled by vaccum lines, but now everything is electronic.... - … I checked vacuum hoses and found one unplugged going to a valve that goes to the canister behind the battery. That faces the passengers blows out of the hose were wrapped in that plastic conduit settings it only out... In that plastic conduit tundra ac is working but it wo n't and! Main vent of the hose were wrapped in that plastic conduit vents with no defrost or floor this. Air works fine going to a valve that goes to the canister behind the.. Front defrost vents only getting air to come out of my front vents of the front vents... Come out of the defrost vent flow through dash registers fix this problem the Egr valve unplugged... Working but it wo n't change and blow out the dash vents on my 's. 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