My 1996's S10 blower quit working. My AC was out too, so i did not pay much attention to it this summer. I looked at it over the weekend and found the resistor pack in the air plenum under the hood. I had one of these fail in my old Mazda B2000, and it melted the resistors in 1/2. This unit had the resistors intact. BUT, there are thermal inline fuses with the resistors. There are three of these and they all seem to be open circuit. I pulled another resistor pack out of a parts truck and it seems to work. The real question is why the thermal fuses blew.
I seem to recall last winter sometimes the blower would work, and sometimes it would not. Then i would play with the switch and it would usually come back on. So, what would cause this? My theory is the blower motor is somehow freezing up and causing high current draw? The blower motor does not make any funny noises like a bearing going out or such. It seems to work on all speeds now.
Also, sometimes it seems i am getting hot air out of the vents when the blower is off and the temp is all the way cold. Did the S10's have a problem with the air door actuator? Do you really have to take the dash off to get to this or can go go through the glove box.?
Bob