Without diesel, 5.0, 5.7 & 7.4L. Express, savana. Cargo, passenger van. Astro, Safari. 4.3l. At frame rail. All models. 4.3l. With 7.4L, gas. Without diesel, 4.3L. Exc.Auxiliary Fuel Tank. 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

Purge Valve

All models. 5.0l, 5.7l, 7.4l. Without diesel, 4.3, 5.0 & 5.7L. Location-Engine Bay. Without diesel, 7.4L. Express, savana. 5.0l, 5.7l. Express, savana. 4.3l. All models. 4.3l. Auto trans. Controls vapor flow from canister to engine

Oxygen Sensor

All models. 7.4l. On manifold. Express, savana. All models. 5.0l, 5.7l. 4l80e, manual trans. Without diesel. Over 8500 gvw. Front. 4.3l, 5.7l. With 7.4L, gas. Over GVW 8,500 Lbs. 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

Oxygen Sensor, Rear