{"product_id":"gm-genuine-parts-fuel-tank-selector-switch-d7003-15591149-oe-replacement-for-dual-tank-systems-direct-fit","title":"GM GENUINE PARTS Fuel Tank Selector Switch D7003 (15591149) - OE Replacement for Dual-Tank Systems, Direct Fit","description":"\u003cp\u003e\u003cstrong\u003eThe GM Genuine Parts D7003 (15591149) Fuel Tank Selector Switch is the original-equipment switch that lets drivers manually select between two onboard fuel tanks for reliable fuel routing and operation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt to the same specifications used by General Motors, this selector switch replaces the factory-installed component on GM vehicles equipped with dual fuel tanks. It interfaces with the vehicle's fuel plumbing and electronics to move the internal valve between tanks, ensuring smooth transitions and preserving the intended performance of the fuel system. As an OE-validated part from GM Genuine Parts, it provides compatibility, fit, and durability expected for service and restoration work.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the selector switch work in a dual-tank system?\u003c\/h3\u003e\n\u003cp\u003eThe switch operates an internal valve assembly that directs fuel flow from one tank to the engine while isolating the other tank. When you toggle the selector, the switch signals the valve mechanism to change position so fuel is drawn from the chosen tank without manual plumbing modifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSimple manual control for switching between primary and secondary tanks\u003c\/li\u003e\n  \u003cli\u003eDirectly actuates the valve to route fuel to the engine\u003c\/li\u003e\n  \u003cli\u003eMaintains sealed separation to prevent cross-contamination\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this part fit my GM vehicle and match the original?\u003c\/h3\u003e\n\u003cp\u003eThis D7003 (15591149) switch is produced to GM OE specifications and is intended as the recommended replacement for the factory-installed selector used on compatible GM models. Because it’s an OE part, it’s engineered for the same mounting, electrical connections, and mechanical interfaces as the original component.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered to original equipment dimensions for straightforward installation\u003c\/li\u003e\n  \u003cli\u003eElectrical and mechanical interfaces match factory connectors and fittings\u003c\/li\u003e\n  \u003cli\u003eBacked by GM validation to ensure compatibility with approved applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and reliability features should I expect?\u003c\/h3\u003e\n\u003cp\u003eGM Genuine Parts are designed, engineered, and tested under the same standards applied during vehicle production. This selector switch focuses on long-term reliability, consistent operation, and resistance to fuel-system environments so it continues to perform as intended under normal vehicle usage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured to GM OE spec for fit, form, and function\u003c\/li\u003e\n  \u003cli\u003eCompatibility with vehicle electronics helps preserve system behavior\u003c\/li\u003e\n  \u003cli\u003eQuality control and materials chosen for durability in fuel-system conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I replace or service the fuel tank selector switch?\u003c\/h3\u003e\n\u003cp\u003eReplacement typically involves accessing the selector mounting location, disconnecting the electrical connector and fuel lines as required, and installing the new GM Genuine Parts switch in the original position. Follow vehicle service manual steps for safe fuel-system work and proper torque specifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatch part number D7003 (15591149) to the vehicle’s required service parts list\u003c\/li\u003e\n  \u003cli\u003eUse factory-recommended procedures to disconnect and reconnect fuel lines and wiring\u003c\/li\u003e\n  \u003cli\u003eInspect seals and fittings during installation and test switching operation after fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The GM Genuine Parts D7003 (15591149) Fuel Tank Selector Switch is intended for owners, technicians, and restoration specialists working on GM vehicles equipped with dual fuel tanks who want an OE-validated replacement. It’s ideal when you need a direct-fit, reliable switch that maintains factory functionality and interfaces with the vehicle’s existing fuel plumbing and wiring. Choose this part when you prefer GM-backed quality and compatibility rather than aftermarket alternatives.\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 D7003 (15591149) an original equipment replacement?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This switch is a GM Genuine Parts item manufactured to OE specifications and validated for compatible GM vehicles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install this myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Experienced DIYers can install it, but follow the vehicle service manual and fuel-system safety procedures or have a technician install it.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":48084646297758,"sku":"B000C9MN2C","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-genuine-parts-d7003-selector-switch-front-view.jpg?v=1785861596","url":"https:\/\/northtrailauto.ca\/products\/gm-genuine-parts-fuel-tank-selector-switch-d7003-15591149-oe-replacement-for-dual-tank-systems-direct-fit","provider":"North Trail Auto","version":"1.0","type":"link"}