Description: All models. 4.2l. 113 wheelbase. Uplander. 113 wheelbase. All models. 6.0l. 5.3L. Short wheel base. 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: 4.2L. 5.3L.

Description: Front. 5.3L. SSR. 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