Hey strange symptom I'm having. I hear a subtle hissing sound from my HVAC coming through the vents, it goes for 8-10 minutes, then stops for a couple minutes, then begins again. i noticed it at all times, and just now it was set at 72, no recirc, and fan down to one bar. So it wasn't an automatic thing. The only code she has thrown was that the driver's side blend door motor that i'm still hoping someone can tell me how deep in the dash I'd have to go.