Description: Envision. Lane departure. Front. Active safety cntl. module. ATS. XTS. Active safety cont. Pre-crash system. Sedan, collision warning system. 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 Designed to help notify operator if the vehicle crosses lane markers This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors