{"product_id":"gmc-sierra-2500-3500-2020-2024","title":"GMC Sierra 2500\/3500 2020-2024","description":"\u003cp\u003e\u003cstrong\u003eKeep your heavy-duty GMC truck performing at its best with the Haynes Repair Manual for the 2020–2024 GMC Sierra 2500HD and 3500HD.\u003c\/strong\u003e Built for serious towing, hauling, and demanding jobsite work, these trucks are engineered for durability and power. This step-by-step repair manual provides the detailed guidance you need to maintain and repair your Sierra HD with confidence.\u003c\/p\u003e\n\n\u003ch2\u003eExpert Guidance You Can Trust\u003c\/h2\u003e\n\u003cp\u003eEvery Haynes manual is developed from complete hands-on strip-downs and rebuilds performed by experienced technicians and editors. The result is a clear, practical guide packed with step-by-step instructions, torque specifications, detailed illustrations, and helpful tips that make even complex repairs easier to understand.\u003c\/p\u003e\n\n\u003cp\u003eWhether you’re performing routine maintenance or tackling major repairs, this manual helps you save money and keep your truck running like new.\u003c\/p\u003e\n\n\u003ch2\u003eModels Covered\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGMC Sierra 2500HD (2020–2024)\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 3500HD (2020–2024)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEngines Covered\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6.6L V8 Turbo-Diesel Duramax (L5P)\u003c\/li\u003e\n\u003cli\u003e6.6L V8 Gasoline (L8T) – Online coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon GMC Sierra 2500 \/ 3500 Issues (and How This Manual Helps)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuramax DEF system warning lights\u003c\/strong\u003e – Diagnose emissions issues and service SCR components commonly appearing after 60,000 miles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurbocharger performance loss\u003c\/strong\u003e – Inspection, troubleshooting, and replacement procedures often needed around 80,000 miles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllison transmission shifting delays\u003c\/strong\u003e – Fluid service procedures and diagnostic checks for trucks with 50,000+ miles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuspension wear and steering play\u003c\/strong\u003e – Step-by-step replacement for bushings, tie rods, and ball joints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake system servicing\u003c\/strong\u003e – Detailed procedures for rotor and brake pad replacement plus ABS sensor diagnostics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling system leaks\u003c\/strong\u003e – Water pump and radiator replacement to prevent overheating during heavy towing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDriving Habits That Impact Maintenance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnow plowing or rough terrain\u003c\/strong\u003e – Accelerates suspension wear; this manual includes full component replacement procedures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequent towing and hauling\u003c\/strong\u003e – Adds stress to brakes and turbo systems; detailed servicing and repair instructions included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh mileage driving\u003c\/strong\u003e – Regular fluid changes and cooling system checks are critical; service intervals and troubleshooting flowcharts are provided.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOlder or high-mileage trucks\u003c\/strong\u003e – Covers common issues like timing chain wear and ABS sensor failures with clear repair guidance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat’s Inside the Haynes Repair Manual\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eComplete maintenance, repair, and rebuild procedures\u003c\/li\u003e\n\u003cli\u003eFactory torque specifications and technical data\u003c\/li\u003e\n\u003cli\u003eService schedules and fluid capacity charts\u003c\/li\u003e\n\u003cli\u003eTroubleshooting flowcharts for drivetrain, DEF system, electrical, and cooling systems\u003c\/li\u003e\n\u003cli\u003eDetailed coverage of brakes, suspension, steering, HVAC, bodywork, and wiring\u003c\/li\u003e\n\u003cli\u003eHybrid format: printed manual plus online technical coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eFrom routine maintenance to complex repairs, the Haynes Repair Manual for the 2020–2024 GMC Sierra 2500HD and 3500HD gives truck owners and technicians the knowledge needed to get the job done right.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Haynes","offers":[{"title":"Default Title","offer_id":51824792863000,"sku":"9781620924402","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0057\/9813\/3831\/files\/9781620924402_201.jpg?v=1773686774","url":"https:\/\/www.midlifeclassiccars.com\/ar\/products\/gmc-sierra-2500-3500-2020-2024","provider":"MidlifeClassicCars.com","version":"1.0","type":"link"}