GMC Repair: blower motor resistor, blower motor resistor, radio control car

Question
I have a 1997 GMC k2500. I have replaced the blower motor resistor twice in the past 6 months. It continues to go out. what could be causing this resistor to continuously blow out?

Answer
It sounds like your fan is drawing too much current. Has you blower motor been making a growling sound prior to the resistor going out? There are a couple of ways around replacing the blower motor itself. You could add a heat sink. Go to Radio Shack, much cheaper there. You could also use a resistor from a 8.4-9.6 resistor from a radio control car.

 I have used these before. These can take a great deal of heat. I would use a resistor designed for a brush-less motor system. I am unsure of the cost, but it should resolve the issue. I would even go so far as to add a heat sink, and an additional resistor. The blower motor is not one of the tasks I would look forward to. Only to precede by the ever dreaded heater core.

 I would even look at jegs and look at an electric fan. Another option would be to put a power adjustment on your current fan. This resembles a dimmer switch.