GM Genuine Parts Hybrid / Electric Vehicle Sound Alert Speakers are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Your electric or hybrid vehicle may be equipped with a sound alert system that is designed to help alert nearby pedestrians to the presence of your vehicle. It does so when the sensors detect nearby objects or persons and emits an alert sound with these speakers. 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).