Heater/Blower Problems...

I have a 2001 Nissan Quest. The dial for the heating controls has 4 blower levels and just recently the only one that seems to work is level 4...the lower three levels do not blow any air at all. Anyone have any ideas about what the problem is and how I might fix it? I live in the northeast and winter is coming...lol. I've already checked the fuses and they are fine. Thanks for any help...

I have a 2000 Quest and it is doing the same thing. Anyone have any ideas?

Yeah I got it fixed...turns out there's a small circuit board inside the foot vent on the passenger side. The board got too hot and cracked. I bought a used one at the junkyard for ten bucks. Replacing it is an easy job...should take about ten or fifteen minutes.

blower motor resistor it's called .. very easy to replace . You can locate it down on the pass side front by your blower motor.. GL :)