Description: Equinox. Without hands free. Spark. Exc.Remote Engine Start. Sonic. All. With keyless start. Hatchback, without remote start. This part requires programming and/or special setup procedures GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle Helps transmit signal to vehicle to engage door locks or anti-theft alarm system This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors