Silverado, sierra. 6 ft. box. Double & crew cab. 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

Solenoid

Double & crew cab. crew cab 6.6 ft box. 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

Secondary Air Injection Solenoid

Sierra, silverado. Regular cab. 6 ft. box. 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

Purge Valve

Controls vapor flow from canister to engine

Purge Valve Retainer

Double & crew cab. 4.3, 5.3, 6.2L. Regular cab. 1.3l turbo, cvt. 3.6L. 4.2L twin-turbo. 2019. 2020. 2.4L 2012-13. With zr1. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Sierra, silverado. Double & crew cab. Helps prevent the effects of engine blow-by Assists in minimizing premature oil contamination Operates blower air direction controls for A/C and heat This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Upper Oxygen Sensor, Left

Double & crew cab. Tahoe, Yukon, Escalade. Left. Sierra, silverado. Upper. Right. Suburban, Yukon XL. Front. Escalade ESV. Regular cab. 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
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