GM Genuine Parts Brake Pedal Position Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. This sensor monitors the movement or position of the brake pedal to directly activate the brake, brake lights, and turn off cruise control if applied. 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).