{"product_id":"gm-genuine-parts-blower-motor-resistor-for-hvac-part-15-8788-15039098-oe-direct-fit-restores-multi-speed-fan-control","title":"GM GENUINE PARTS blower motor resistor for HVAC — Part 15-8788 \/ 15039098, OE direct-fit restores multi-speed fan control","description":"\u003cstrong\u003eGM Genuine Parts 15-8788 (15039098) is an OE-grade heating and air conditioning blower motor resistor that restores multi-speed fan control on compatible GM vehicles.\u003c\/strong\u003e\n\n\u003cp\u003eThis blower motor resistor is an original-equipment (OE) replacement part engineered and validated by General Motors to match the fit, function, and durability of the factory-installed component. It supplies stepped voltage drops to the blower motor so the cabin fan can operate at multiple speeds. If your HVAC system runs only on one speed or not at all, a failed resistor is a common cause and this GM Genuine Parts unit is designed to provide a direct-fit repair.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this resistor restore HVAC fan speed?\u003c\/h3\u003e\n\u003cp\u003eThe resistor modulates current to the blower motor using several discrete resistance paths so the fan can run at different speeds. Replacing a faulty resistor with the correct OE part ensures those voltage steps are restored and the original blower control behavior returns.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProvides stepped voltage drops for multiple fan speeds\u003c\/li\u003e\n  \u003cli\u003eDirect-fit for specified GM models — no modification required\u003c\/li\u003e\n  \u003cli\u003eReplaces worn or open resistor coils that cause speed loss\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes this a dependable GM Genuine Parts option?\u003c\/h3\u003e\n\u003cp\u003eGM Genuine Parts are engineered, tested, and recommended by General Motors, so they meet the automaker’s standards for reliability and durability. This resistor follows GM OE specifications for dimensions, connector locations, and electrical characteristics to ensure proper operation with factory controls.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured to GM OE specification for fit, form, and function\u003c\/li\u003e\n  \u003cli\u003eBacked by General Motors validation and quality control\u003c\/li\u003e\n  \u003cli\u003eOften previously listed under ACDelco GM Original Equipment (OE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I know this is the right part for my vehicle?\u003c\/h3\u003e\n\u003cp\u003eConfirm compatibility by checking your vehicle’s year, make, and model against part number 15-8788 or GM 15039098. Visual comparison of the resistor’s connector and mounting points to the old part helps ensure a match before installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePart numbers: GM Genuine Parts 15-8788 and 15039098\u003c\/li\u003e\n  \u003cli\u003eVerify fitment against your vehicle’s VIN or parts catalog\u003c\/li\u003e\n  \u003cli\u003eCompare connector shape and mounting location to existing resistor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect during replacement and performance after installation?\u003c\/h3\u003e\n\u003cp\u003eInstallation is typically straightforward for someone with basic automotive experience: disconnect the battery, remove the HVAC cover or glove box as required, unplug the old resistor, and mount the new unit. Once installed, the blower should regain its full range of speeds and operate without intermittent failures associated with a damaged resistor.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores blower speed control caused by a failed resistor\u003c\/li\u003e\n  \u003cli\u003eGM-recommended replacement for original factory component\u003c\/li\u003e\n  \u003cli\u003eQuality and durability consistent with GM OE expectations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This GM Genuine Parts 15-8788 (15039098) blower motor resistor is aimed at GM owners, independent mechanics, and repair shops seeking an OEM-quality replacement for HVAC fan-speed issues. It’s a practical choice if your vehicle’s blower runs only at one speed, fails intermittently, or if you want a factory-validated part to maintain original performance and fit. Always verify compatibility with your specific model year and consult a qualified technician if you’re unsure about installation.\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: Will this resistor fix a blower that only works on high?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Replacing a faulty resistor often restores low and medium fan speeds that fail when the resistor burns out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this an original GM part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This is a GM Genuine Parts item (15-8788 \/ 15039098), manufactured to GM OE specifications.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":48084379861150,"sku":"B000C9DIXK","price":33.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-genuine-parts-blower-resistor-front-view.jpg?v=1785852547","url":"https:\/\/northtrailauto.ca\/products\/gm-genuine-parts-blower-motor-resistor-for-hvac-part-15-8788-15039098-oe-direct-fit-restores-multi-speed-fan-control","provider":"North Trail Auto","version":"1.0","type":"link"}