No, I haven't checked the blend door yet, but the slides feel like they are attached and moving something. I have the feeling it has to do with the lower temp thermostat that I put in when I replaced my water pump last spring. I think it is a 175 now, but with the colder weather I don't even see the engine temp get above 130-140 on the dial. I thought there was no heat, but it is just a little warmer than the outside air because the defrost did start to work last week when I had to scrape the windows by the time I got to work. It's probably blowing 50 degree air. That's the least of my worries right now. Something bad is happening in my driveline and I haven't had a chance to figure it out yet.