Hopefully one of you guys that knows a lot more than me can help me out. I have an 05 Grand Prix and the blower motor keeps running even when the car is off and the key is out. It keeps running on high. I have replaced the resistor, it still keeps running. I have even unplugged the fan switch and it still keeps going. The only way I have got it to stop is by pulling the Battery 4 fuse. Any ideas why it keeps getting power?