So this past weekend I decided to finally drain and refill the coolant on my car as I think it may have been original to the car. Got everything buttoned up and tuned the heater on full blast with the engine running to make sure I was purging the heater core and think I may have just made my life miserable. I tuned it back to full cold and turned the A/C on to try to cool things back down and wasn't getting any refreshment. Figured maybe everything was just really heat soaked so I didn't think much of it. Hop in the car to go to work this morning and the termperature dial on the HVAC controls doesn't appear to do anything. My guess is the blend door actuator has either siezed or the door itself somehow jammed. Looking at the service manual it indicates a full dash removal to get to it. Has anyone ever had a similar problem and could offer a less intensive repair option? I was going to see where I could reach my hands, but I'm not terribly optimisic at the moment. Maybe I can pull the glovebox to get to it, but wont't know until I try.