1995 Chevy Blazer A/C willl blow out of defroster/floor but

1995 CHEVROLET BLAZER
197,906 MILES • 4 CYL • 4WD • AUTOMATIC
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RIGSBY92
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The air conditioning has worked great until a week ago when it just quit blowing out of the vents. The air is still ice cold but will only blow of the defrost and floor no matter what you set the switch at. I have took the switches out and messed with the vacuums but unpluging and pluging them one at a time to see if by doing that it might blow out of the vents and it will not do so. I figured it is something behind the dash such as a door flap or something like that but i'm not for sure. I was going to take the dash out but i want to see if there is something else i can do or check before going this route.
Jun 27, 2010 at 1:57 PM
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HMAC300
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hopefully you have put the lines back where they belong. there should be a vacuum motor on the heater module that isn't working correctly. YOu'll have to feel around by the module to find it and see if it is getting vacuum to work it. there may be two so you'll have to squeeze in there and check.
Jun 28, 2010 at 5:53 PM
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RIGSBY92
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Yes I took one vacuum off at a time and they all got put back in the correct place. Ok well where is the heater module located at? I'm not sure where it is ok what it looks like and does the dash have to come out for this?
Jun 30, 2010 at 10:53 AM
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HMAC300
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teh heater module is on the passenger side of the truck under the dash. You shouldn't have to pull the dash out to change the vacuum motor. It won't be easy to do but you can reach it and see if it's stuck or not working. It may move if you mess around with it. here is a diagram you can find the part from this......


https://www.2carpros.com/forum/automotive_pictures/406719_vac_diagram_1.jpg

Jun 30, 2010 at 1:13 PM
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RIGSBY92
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So the from looking at the diagram this module would be the heat/defrost actuator? I appreciate all your help. I was gonna pull the dash out and check all the vacuums before you helped me.
Jul 1, 2010 at 9:43 AM
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HMAC300
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actually it should be the centr outlet acutator. If it comes out the floor then that one is ok. Keip in mind that the chart I sent you is only a generalization and not te actual thing. these actuators may be righ ton top of each other or a little bit apart.
Jul 1, 2010 at 6:22 PM