Description: Sonic. Hatchback. Remote Start Key, Uncoded (Qty. of 2 Required) (with RPO TB4). 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 Provides the ability to lock or unlock the vehicle's doors, set the anti-theft system, and to remote start the vehicle This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors