the middle vents only supply air from the ac unit using a separate in dash fan. the floor and defrost vents come only from the heater
There may be something blocking the deflectors from sending air up there.
1995 and 1996 Galant parts are interchangeable. Some of these interchangeable parts are the floor panels, handles, and aircon vents.
The most likely cause would be a vacuum leak at the rear of the engine or a defective selector switch.
I am sorry, I am not technical on this stuff, but we had the same problem on our 95 Mustang GT. We had to take it into the dealer and the problem was that one of the hoses had come loose, so it was not blowing enough air pressure to force the vents open.
The a/c - heater controller is out...........
What causes heat to only come out of the defrost and vent but not the floor of a 1995 S10 Blazer?
Air flow is controlled by plastic doors which are controlled by vacume motors. Could be they're stuck, or a vacume leak.
When there is a problem with the vent system it dfaults to the defrost setting. Sounds like you have a problem in the doors that direct the air flow.
there isn't one
you have to make sure there is no short and check for voltage amount at the strips of the window to make sure defroster is working
The fans will probably stay on while the defroster is on because the A/C compressor is running.
That should be the window defroster.