Description: 3.4l. Without awd. Without extended. S-series. 4.3l. All. Exc.Extended Wheelbase. 4 door. 5.3L. Helps reduce harmful pollutants from entering the atmosphere Captures fuel vapors to be re-burned in the engine This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Description: S-series. 4.3l. All. 4.3L, rear of converter. 4.3L, front of converter. Detects oxygen content in the exhaust gases to help optimize emissions This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors