A.I.R Pump

Express, savana. 4.3l, 5.7l, 8.1l. 4.3, 4.8, 5.3 & 8.1L, 4.3, 4.8, 5.3 & 8.1L. S-series. 2.2l. S-series. 4.3l. All models. 8.1l. Pump only. All models. 4.3l. Helps maintain controlled air flow to proper air injection components This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Silverado, sierra. Short bed. 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

Controls vapor flow from canister to engine

Vapor Canister Purge Solenoid

Location-Vapor Canister. 2.5" Dia. Controls fresh air flow to the canister Sends fuel vapors to the engine for re-burn Helps control fuel tank pressure This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Oxygen Sensor, Left

All models. 5.3l. All models. 4.8l. All models. 4.3l. 4.8L, front of converter. Front of converter, 5.3l. 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