Description: S-series. Envoy/Rainier/Trailblazer. With short wheel base. 1st design. Bravada. Left. See window regulator. 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 allow the window to be operated with the push of a button This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors