Parking assist, without front park assist, labeled 23221160. Sierra, silverado. Park assist, without front prk assist, 2nd design. Tahoe, Yukon, Escalade. With collision alert. 2nd design. Reverse sensing system, without front sensors, 2nd design. Suburban, Yukon XL. PARKING ASSIST. without front park assist 2nd design. PARKING ASSIST. without frt park assist labeled 23444865. 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 This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Collision parts are designed to help promote proper and safe repair