GM Genuine Parts Seat Belt Warning Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors help detect if the seat belt is disconnected while there is an occupant in the seat. They send a signal to the seat belt reminder system which triggers a warning indicator or chime to alert the occupants. 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). WARNING: Cancer and Reproductive Harm