The air control dash works but no air coming out

The ducts have dampers that work off of a vacuum and control the flow of air to the different air vents at the top, bottom and face of the dash. Sometimes the vacuum lines come loose or break. You'll need to look under the dash to see if any of these conditions exist.

Could be a problem with the control on the dash or a blend door under the dash.

the air vent is control in your consul maybe is not properly set up check to the a/c technician

The head control in the dash is most likely the problem,the control in the dash,will have to be replaced.,only thing you can try would be to disconnect the negative battery cable for 10 seconds and put it back on,then turn the ignition on,then start,see if the controller starts to work again,if not replace the head.

Blend Door Actuator.Should have 2.One will controll the air across the heater core,and the other will adjust air flow direction.

Check the plenum door motors (vacuum controllers). When you move control you should see each of them move. the one that does not respond is the one that isn't working. Check hose that feeds it as well if no vacuum there switch control is bad.)

the linkage that runs the blend door isn't working, these are the doors that control hot and cold and air flow to dash floor ect...they are located in the air box behind the dash ................ you may be able to pull the heater controls out of the dash and spot the problem but it's likely that the problem is in the air box itself and removal of the entire dash is required (big job!!!!!!!!!).........if your vehicle uses vacuum to control this (some gms use vaccum and some a cable)you might have a hose disconnected under the hood by the heater fan.........if it's a cable it may be knocked off at the dash controls or at the other end on the heater box..........sometimes removal of the glove box will give you acess to this connection.
just checked and 88 s-10 is a cable
hope this helps..........thanks fro choosing FIX YA!

the linkage that runs the blend door isn't working, these are the doors that control hot and cold and air flow to dash floor ect...they are located in the air box behind the dash ................ you may be able to pull the heater controls out of the dash and spot the problem but it's likely that the problem is in the air box itself and removal of the entire dash is required (big job!!!!!!!!!).........if your vehicle uses vacuum to control this (some gms use vaccum and some a cable)you might have a hose disconnected under the hood by the heater fan.........if it's a cable it may be knocked off at the dash controls or at the other end on the heater box..........sometimes removal of the glove box will give you acess to this connection.
hope this helps..........thanks fro choosing FIX YA!

your ac/heater door controler motor is not working it opens and closes the trap door in the dash it is right behind the dash it cost around 140.00

linkage inside dash or relay for electric front vents went bad
linkage sometimes comes off its holder from usage this is normal there only held in by a upin under the dash
if electric the relay for the the top vents needs replacing this i believe will be with rest of the relays in engine compartment