{"product_id":"wit-whatever-it-takes-transmission-parts-inc-genuine-gm-auto-trak-ii-transfer-case-fluid-1l-blue-oem-formula-high-temp-stable","title":"WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC Genuine GM Auto-Trak II Transfer Case Fluid 1L — Blue OEM Formula, High-Temp Stable","description":"\u003cp\u003e\u003cb\u003eGenuine GM Auto-Trak II Transfer Case Fluid (1 L, GM Part No. 19540587) is the factory-specified fluid formulated for electronically controlled GM transfer cases to ensure smooth engagement, reliable clutch operation, and long-term protection.\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you own a GM truck or SUV equipped with an Auto-Trak or Active Transfer Case, using the correct fluid matters. This blue-tinted, OEM-formulated 1-liter fluid is developed to meet GM’s engineering requirements for modern AWD\/4WD transfer cases, helping reduce shudder, manage torque transfer, and resist high-temperature breakdown during heavy use. It replaces part numbers 10-4017, 88900402, 12378396, and 12378508, making it a direct fit for service and maintenance work where factory specification and compatibility are priorities.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does this transfer case fluid do for my vehicle?\u003c\/h3\u003e\n\u003cp\u003eThe fluid provides precise clutch engagement and consistent friction characteristics that many electronically controlled transfer cases require. It lubricates internal gears and clutch packs while resisting oxidation and thermal degradation under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaintains clutch friction for consistent AWD\/4WD engagement\u003c\/li\u003e\n  \u003cli\u003eReduces internal wear on gears, bearings, and seals\u003c\/li\u003e\n  \u003cli\u003eResists high temperatures to extend service intervals\u003c\/li\u003e\n  \u003cli\u003eBlue tint helps technicians identify the correct fluid during service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I know this fluid fits my vehicle?\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine GM Auto-Trak II formula and is identified by part number 19540587. It’s intended for GM transfer cases that specify Auto-Trak II fluid; it replaces several legacy part numbers listed by GM.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck your owner’s manual or service guide for part 19540587\u003c\/li\u003e\n  \u003cli\u003eCompatible with vehicles calling for Auto-Trak II or the replaced numbers\u003c\/li\u003e\n  \u003cli\u003eDesigned for electronically controlled transfer cases found on many GM trucks and SUVs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this fluid stand up under heavy towing or off-road use?\u003c\/h3\u003e\n\u003cp\u003eThe formulation is engineered for high-temperature stability and oxidation resistance, which helps the transfer case tolerate heavier loads and prolonged operation. That stability supports longer life for internal components when your vehicle faces strenuous driving conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-temperature resistance reduces fluid breakdown during heavy duty use\u003c\/li\u003e\n  \u003cli\u003eOxidation inhibitors slow varnish and deposit formation\u003c\/li\u003e\n  \u003cli\u003eFriction modifiers help prevent shudder during torque transitions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I store and handle this fluid when servicing my vehicle?\u003c\/h3\u003e\n\u003cp\u003eKeep the 1-liter bottle sealed and stored upright in a cool, dry place away from direct sunlight. Use clean tools and funnels when filling the transfer case to avoid contamination and ensure correct fluid performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStore in original, tightly sealed container at moderate temperatures\u003c\/li\u003e\n  \u003cli\u003eAvoid mixing with other fluid types unless explicitly allowed by GM\u003c\/li\u003e\n  \u003cli\u003eUse a clean funnel and follow factory fill and level procedures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This genuine GM Auto-Trak II Transfer Case Fluid is aimed at owners, technicians, and service shops working on GM trucks and SUVs that require GM Part No. 19540587 or its equivalents. It’s particularly valuable for those who prioritize OEM compatibility and want a fluid engineered to match the frictional and thermal demands of electronically controlled transfer cases. Whether you’re performing routine maintenance, preparing a vehicle for towing, or restoring optimal AWD\/4WD operation, choosing the factory-specified fluid helps maintain the intended driveline behavior and longevity.\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 this the exact OEM fluid my GM transfer case needs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This is Genuine GM Auto-Trak II, part no. 19540587, specified as the OEM replacement for applicable GM transfer cases.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I mix this with other transfer case fluids?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Mixing is not recommended. Use the factory-specified fluid to maintain clutch friction and component protection.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC","offers":[{"title":"Default Title","offer_id":48084464173214,"sku":"B0G277MTC1","price":31.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-auto-trak-ii-front-label.jpg?v=1785856267","url":"https:\/\/northtrailauto.ca\/products\/wit-whatever-it-takes-transmission-parts-inc-genuine-gm-auto-trak-ii-transfer-case-fluid-1l-blue-oem-formula-high-temp-stable","provider":"North Trail Auto","version":"1.0","type":"link"}