Review on 🔧 GM Genuine Parts 15-80521: Reliable Heating and AC Blower Motor Resistor by Chad Siofele

I can only give three stars due to the poor design of this product. GM engineers know it's bad design, and yet they don't care just to save money. 3rd gear is always OFF. BTW, I found out that even with this motor controller turned off completely, you still get great speed. Proper motor control would be nice, but this was a cheap and easy way of simply matching a resistor to 12 volts. Well, resistors tend to get hot. After all, they resist the current. I'm surprised this isn't a recall and the cars haven't caught fire yet. I will NEVER use my 3rd speed dial again so I don't have to buy one of these every 2 years.