May 24, 2019 - The charcoal canister is a major component of the evaporative emissions . to give it an incredibly disproportionate surface area for its size; it's a sponge . While refueling, the canister vent valve opens, allowing air and fuel . Sep 13, 2016 - Hydrocarbon is distributed by the EVAP purge solenoid into the fuel . If the EVAP vent solenoid is malfunctioning, it must be replaced. . and notices a large burst of air pressure once the cap is loosened or removed entirely. See how to replace the charcoal canister and vent solenoid in this tech article. . The charcoal in the canister can absorb large volumes of evaporated gasoline and . leak codes that can be caused by components in the charcoal canister area. AutoZone Repair Guide for your Engine Performance & Emission Controls Electronic Engine & Emission . The control module tests this by commanding the EVAP purge solenoid ON, open; and commanding the . A malfunction in the EVAP system and a large leak test fails Seat Cover · Universal Seat Belt · Gap Trap. P0455 Evaporative Emission Control System Leak Detected (gross or large leak) . If there is no click, the vent control valve must be replaced. . A: One particular area that often causes an EVAP leak in these trucks is a cracked rubber hose . Jan 5, 2016 - The canister purge solenoid is the component in the EVAP system that is . A Check Engine Light can also be caused by a wide variety of other . if the canister purge solenoid or vacuum hose needs to be replaced. . Automakers embrace in-car shopping; drivers just want a parking space - Autoblog. May 2, 2019 - When this purge valve opens, the canister also takes in fresh air and hydrocarbon emissions are reduced, replaced by carbon dioxide and . ACDelco 214-1105 GM Original Equipment Vapor Canister Purge Valve . i.e., 'wide open, very easy access below the gas cap area), 2) 'click-release' it (after .