{"product_id":"gm-genuine-parts-brake-light-switch-d1586h-15861245-oe-fit-plunger-style-factory-replacement","title":"GM GENUINE PARTS Brake Light Switch D1586H (15861245) OE-fit plunger-style factory replacement","description":"\u003cp\u003e\u003cstrong\u003eThe GM Genuine Parts D1586H (15861245) Brake Light Switch is the factory-equivalent electrical switch that activates brake lights when the brake pedal is applied.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis switch is an OE-grade replacement produced or validated by General Motors to meet original fit, form, and function for compatible GM vehicles. Designed, engineered, and tested to the same rigorous standards as factory-installed components, the D1586H integrates with vehicle electronics to ensure the brake lamp circuit responds reliably every time you press the brake pedal.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this switch interact with my vehicle's electronics?\u003c\/h3\u003e\n\u003cp\u003eThe D1586H is an electrically operated plunger-style switch that completes the brake light circuit when the pedal is depressed. It is manufactured to GM specifications so signal timing and electrical resistance align with the vehicle’s original design.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirectly connects to the brake lamp harness for consistent signal transmission.\u003c\/li\u003e\n  \u003cli\u003eDesigned to match OE electrical impedance and contact point spacing.\u003c\/li\u003e\n  \u003cli\u003eWorks with stability, cruise control, and other subsystems that monitor brake input.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this part fit my GM vehicle and replace the original unit?\u003c\/h3\u003e\n\u003cp\u003eGM Genuine Parts are intended as the recommended replacement for the factory component, and D1586H corresponds to part number 15861245 for specific vehicle applications. Confirm compatibility using your VIN or the vehicle’s parts catalog before purchasing to ensure exact fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIdentical mounting points and plunger length to factory-installed switches.\u003c\/li\u003e\n  \u003cli\u003eManufactured to GM OE dimensions for proper pedal travel and engagement.\u003c\/li\u003e\n  \u003cli\u003eMarked and packaged as a GM Genuine Parts item for traceability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the tangible benefits of choosing a GM Genuine Parts switch?\u003c\/h3\u003e\n\u003cp\u003eChoosing a GM Genuine Parts switch helps preserve factory functionality and avoids surprises from aftermarket variations. The D1586H provides the durability and reliability expected from components validated by General Motors, which can reduce troubleshooting time when replacing a malfunctioning switch.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOE-level quality minimizes fitment issues and reduces rework.\u003c\/li\u003e\n  \u003cli\u003eDurable contacts and housing for long service life under normal use.\u003c\/li\u003e\n  \u003cli\u003eBacked by GM’s engineering standards and part traceability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install or check the brake light switch?\u003c\/h3\u003e\n\u003cp\u003eInstallation typically requires accessing the brake pedal area, unplugging the electrical connector, removing the retaining fastener, and fitting the new switch to the pedal bracket. After installation, verify correct pedal travel and confirm the brake lights illuminate only when the pedal is pressed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDisconnect battery or follow vehicle-specific safety steps before work.\u003c\/li\u003e\n  \u003cli\u003eAdjust plunger position per the service manual so lights activate at the right pedal travel.\u003c\/li\u003e\n  \u003cli\u003eTest operation with a helper or visual confirmation after fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The GM Genuine Parts D1586H (15861245) Brake Light Switch is aimed at owners and technicians who want a direct-fit, OEM-quality replacement for GM vehicles. It suits anyone seeking the original equipment spec for brake light activation—especially DIY mechanics, independent repair shops, and fleet maintenance teams who require reliable, traceable GM components.\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 D1586H an original equipment part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The D1586H is a GM Genuine Parts item manufactured or validated to GM OE specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How can I confirm this switch fits my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Verify fitment using your VIN or consult the GM parts catalog for part number 15861245 compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":48084078690462,"sku":"B000S2VZ6S","price":70.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-genuine-parts-brake-light-switch-front.jpg?v=1785845680","url":"https:\/\/northtrailauto.ca\/products\/gm-genuine-parts-brake-light-switch-d1586h-15861245-oe-fit-plunger-style-factory-replacement","provider":"North Trail Auto","version":"1.0","type":"link"}