[mechanical_zero]

I'm having the same issue with my car and here is what I've found so far:

The blower motor got clogged with stuff that fell out of my (over stuffed) glove box. The motor sounded horrible, I thought the bearings were going out. Got new blower, and pulled the old one to find the paper clogging the cage. Resistor pack is fine, but the added resistance to the blower motor burned the speed select switch in the ventilation cluster. Haven't yet spent the money to replace it, but it's my next step...