The air flow vents are actuated by engine vacuum, so they will still work if there is no power. As far as the switch itself, there may be power to it but not out. Have you checked the relay in the power distribution box under the hood?
As far as the switch, the bezel that covers or trims the radio and heater control comes off. Under it are a couple bolts that hold the unit in place. If I recall, the bezel is actually mounted with non other than valcro. Be careful removing it to make sure that is correct.
Let me know what you find.
Tuesday, October 12th, 2010 AT 10:38 AM