GM Genuine Parts Multi-Purpose Switches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. It may be a simple or complex switch that controls various functions such as the exterior lighting on your vehicle, power mirrors, and power seats. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).