GM Genuine Parts Vapor Canister Purge Solenoids are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These solenoids control the flow of fuel vapors from the vapor canister into the engine intake manifold. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). Product Features:Permits fuel vapors to enter the engineSends fuel vapors to the engine for re-burnSome GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General MotorsGM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicleGM regularly updates production and service part designs to integrate new materials and technologies