95 cutlass supreme vent control not working stays on the floor and dash only no matter where you turn the switch. How do I fix this?

SOURCE: I have a 1993 Olds Cutlass Supreme. The Defrost

the heater control panel possibly bad. the panel where your heater is at. on the dash,actually where you're turning the directiona for floor and dash, or it could have a bad connection on switch behind the panel.have you spilled liquid on dash in the past? if so you may be able to pull the panel and clean it in order for it to work again. hope this helps!!!

SOURCE: my vent is stuck on floor position and heater

The thing to do is check for vacuum leaks. In the engine bay look for any "hoses" coming from the firewall. These are for the heater contols. If any of these are broke? Replace them . Have you installed a after market radio? Sometimes heater controlls get messed up. I would take the radio out and examine the heater controlls.