{"product_id":"gm-genuine-parts-vapor-canister-vent-solenoid-valve-85123399-direct-fit-oe-replacement-evap-control","title":"GM GENUINE PARTS Vapor Canister Vent Solenoid Valve 85123399 — Direct-Fit OE Replacement, EVAP Control","description":"\u003cp\u003e\u003cstrong\u003eGM Genuine Parts 85123399 Vapor Canister Vent Solenoid Valve is the OE-quality vent control solenoid engineered and validated for compatible Chevrolet, Buick, GMC, and Cadillac models to manage canister venting and tank pressure.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis vent solenoid is a factory-intended replacement part from GM Genuine Parts, built to the same design and testing benchmarks used in original vehicle production. It works with the vehicle’s evaporative emissions system to regulate fresh air flow into the charcoal canister and to permit controlled venting, helping the vehicle’s EVAP system operate as designed. Backed by General Motors engineering validation, this solenoid is a direct-fit component that reduces installation guesswork and maintains factory performance.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the 85123399 vent solenoid function in the EVAP system?\u003c\/h3\u003e\n\u003cp\u003eThe solenoid opens and closes under command from the vehicle’s engine control unit to let filtered air enter or exit the vapor canister. This controlled venting supports proper purge cycles and helps maintain intended fuel tank pressure. It does not itself treat vapors; instead, it governs airflow for the canister and purge system.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eElectrically actuated valve that receives ECU signals\u003c\/li\u003e\n  \u003cli\u003eAllows fresh air into the charcoal canister during venting\u003c\/li\u003e\n  \u003cli\u003eWorks with purge valve to route fuel vapors to the engine\u003c\/li\u003e\n  \u003cli\u003eHelps maintain manufacturer-specified tank pressure ranges\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this GM Genuine Parts unit fit my vehicle and how easy is it to install?\u003c\/h3\u003e\n\u003cp\u003eThe 85123399 is an OE-design part intended for specific GM applications; fitment depends on make, model, year, and engine. Because it’s a direct-replacement GM part, its electrical connector, mounting points, and dimensions match original specifications in compatible vehicles, typically simplifying installation for professional technicians or experienced DIYers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit design for validated GM vehicle applications\u003c\/li\u003e\n  \u003cli\u003eMatches factory connector and mounting locations\u003c\/li\u003e\n  \u003cli\u003eInstallation usually requires basic hand tools and limited disassembly\u003c\/li\u003e\n  \u003cli\u003eRefer to vehicle-specific diagrams or shop manual for guidance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and durability features should I expect from this OEM solenoid?\u003c\/h3\u003e\n\u003cp\u003eGM Genuine Parts are engineered to meet or exceed factory durability and performance targets, using materials and tolerances validated by GM engineers. The solenoid is built for repeated actuation and exposure to under-hood\/environmental conditions typical of EVAP components, helping preserve system function over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered and validated to GM production standards\u003c\/li\u003e\n  \u003cli\u003eConstructed for repeated open\/close cycles and thermal exposure\u003c\/li\u003e\n  \u003cli\u003eResists common under-vehicle contaminants and vibration\u003c\/li\u003e\n  \u003cli\u003eReplaces original ACDelco GM OE-labeled parts where applicable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does replacing a faulty vent solenoid help my vehicle’s emissions system?\u003c\/h3\u003e\n\u003cp\u003eSwapping a failing vent solenoid with a proper OE replacement restores the controlled venting function needed for correct purge operations and helps the EVAP system pass on-board diagnostics checks. While it won’t correct unrelated leaks or damaged components, a functioning solenoid is essential for the system to perform as designed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores controlled airflow for purge cycles and diagnostics\u003c\/li\u003e\n  \u003cli\u003eHelps prevent false EVAP-related trouble codes when installed correctly\u003c\/li\u003e\n  \u003cli\u003eDoes not replace damaged hoses, canisters, or sensors—inspect those too\u003c\/li\u003e\n  \u003cli\u003eRecommended when diagnostics point to vent valve failure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The GM Genuine Parts 85123399 Vapor Canister Vent Solenoid Valve is aimed at owners, fleet managers, and technicians who need a factory-validated replacement for GM vehicles. Choose this part if you want a direct-fit, OEM-engineered component to restore proper EVAP vent control and maintain factory design, especially when diagnostic trouble codes or symptom checks indicate a vent solenoid issue. Always verify vehicle compatibility before purchase and consult a repair guide or technician for installation specifics.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the 85123399 an original equipment part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s a GM Genuine Parts component engineered and validated to original factory standards for compatible GM vehicles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What symptoms indicate the vent solenoid needs replacement?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Common signs include EVAP trouble codes, rough idle during purge cycles, or fuel odor—diagnose before replacing to confirm cause.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":48085925265566,"sku":"B0CY1RRXCV","price":48.23,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-genuine-parts-85123399-front-view.jpg?v=1785880773","url":"https:\/\/northtrailauto.ca\/products\/gm-genuine-parts-vapor-canister-vent-solenoid-valve-85123399-direct-fit-oe-replacement-evap-control","provider":"North Trail Auto","version":"1.0","type":"link"}