My blower started to work on 5 only and after doing some research on here I have narrowed it down to it being a faulty resistor on the blower motor. I took off the cover on the motor assembly today to make sure I was going to order the correct part. Has anyone replaced this part and do you got any suggestions or steps on how to go about replacing it? Can I just splice the wires in or should I follow them back to the source. I didn't look under there too much as I was just looking at the resistor to make sure I would get the correct replacement part. Plus the old one looks like a circuit board and the new one is a different design. Does anyone know if they improved the design since 2004? I have a 2004 Silverado with the manual climate controls.