🏷️ Basic Information Identification Make: GMC Model: Sierra 3500 HD Year: 2013 Codes Platform: GMT900 👋 Introduction Market Position Target Audience: DIY enthusiasts, professional mechanics, fleet maintenance personnel. Competitive Analysis Advantage: Licensed OE information, convenient online access, cost-effective compared to print manuals. Key Features Licensing: Officially licensed, derived from OE materials by RepairSurge. Access Duration: 1 year access included, with discounts for extended access. 📋 Manual Details Coverage Areas General Coverage: Comprehensive service and repair information for the 2013 GMC Sierra 3500 HD. Page Count Estimated Pages: Extensive (specific page count not provided, but described as comprehensive). Manual Type Type: Online Service and Repair Manual Software Language Language: English Format Format: Online, Web Browser Accessible (PC, laptop, smartphone, tablet compatible) 📖 Manual Coverage Systems Covered Engine: Detailed repair, diagnostics, and maintenance for gasoline and Duramax diesel engines. Drivetrain: Coverage for front and rear axles, driveshafts, differentials, and transfer cases. Brakes: Service and repair for hydraulic brake systems, ABS, and parking brake. Suspension Steering: Front and rear suspension components, steering gear, and power steering system. Electrical: Comprehensive wiring diagrams, electrical component testing, and diagnostic procedures. HVAC: Heating, ventilation, and air conditioning system diagnosis and repair. Body Chassis: Body repair, panel replacement, interior trim, and chassis component service. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, and inspections. Repair: Step-by-step repair procedures for all major vehicle systems. Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs), and symptom-based diagnostics. Technical Data: Specifications, torque values, clearances, and alignment data. Technical Depth Depth: OE (Original Equipment) level detail, suitable for professional technicians and advanced DIYers. 📊 Manual Specifications File Format Access Method: Web-based, requires internet connection and web browser. Print Quality Digital Quality: High-resolution digital content, licensed OE materials. Binding Type Binding: N/A (Online access, not a physical binding). Paper Type Paper Type: N/A (Digital format). ⚙️ Engine Specifications Primary Engine Engine Options: 6.0L V8 Vortec Gaseous Fuel (LC8), 6.0L V8 Vortec FlexFuel (L96), 6.2L V8 Vortec (L94), 6.6L V8 Duramax Turbo-Diesel (LML) Performance 6.6L Duramax Lml Horsepower: 397 hp @ 3000 rpm 6.6L Duramax Lml Torque: 765 lb-ft @ 1600 rpm 6.0L Vortec L96 Horsepower: 360 hp @ 5400 rpm 6.0L Vortec L96 Torque: 380 lb-ft @ 4200 rpm Fuel System Diesel Fuel Type: Diesel (with mandated ULSD - Ultra Low Sulfur Diesel) Gasoline Fuel Type: Regular Unleaded Gasoline, E85 FlexFuel Engine Management Efi Type: Sequential Fuel Injection (SFI) 🔧 Transmission Standard Transmission Standard Diesel: Allison 1000 6-speed automatic Transmission Standard Gas: 6L90 6-speed automatic Optional Transmission Optional: N/A (Only automatic transmissions offered for this heavy-duty model). Features Towing Mode: Tow/Haul mode for optimized shift points under load. Fluid Specifications Allison 1000 Fluid: Dexron VI Automatic Transmission Fluid 6L90 Fluid: Dexron VI Automatic Transmission Fluid 📐 Dimensions Exterior Body Styles: Regular Cab, Extended Cab, Crew Cab Bed Lengths: 6'6" Standard Bed, 8' Long Bed Wheelbase Options: 143.5" (Regular Cab), 153.7" (Extended Cab), 167.7" (Crew Cab 6'6" bed), 177.7" (Crew Cab 8' bed) Weights Gvwr Range: 9,900 lbs to 11,000 lbs (depending on configuration) Curb Weight Range: Approx. 6,000 lbs - 7,000 lbs Payload Capacity Max: Up to ~5,500 lbs (configuration dependent) Towing Capacity Max: Up to 23,100 lbs (with proper trailering equipment and configuration) 🛡️ Safety Features Ratings NHTSA Rollover Rating: 4-Star (for applicable configurations) Active Features ABS: Standard Four-Wheel Antilock Braking System (ABS) Traction Control: StabiliTrak Stability Control with Traction Control Passive Features Airbags: Driver and Front Passenger Airbags, Available Side-Curtain Airbags (configuration dependent) Seatbelts: Front and Rear Seatbelt Pretensioners 💡 Technology Features Infotainment Infotainment System: Available touch-screen infotainment systems with navigation, USB, Bluetooth connectivity. Driver Assistance Parking Assist: Available Rear Park Assist. Camera: Available Rear Vision Camera. Connectivity Bluetooth: Available Bluetooth hands-free calling and audio streaming. 🔧 Maintenance Service Intervals Oil Change Interval Diesel: Typically 5,000-7,500 miles or 6-12 months, depending on operating conditions (refer to manual for specifics). Oil Change Interval Gasoline: Typically 7,500 miles or 6-12 months, depending on operating conditions (refer to manual for specifics). Tire Rotation: Recommended every 7,500 miles. Fluid Specifications Engine Oil Diesel: API CJ-4, SAE 15W-40 (check manual for specific viscosity based on ambient temperature). Engine Oil Gasoline: API SN, SAE 5W-30 (check manual for specific viscosity based on ambient temperature). Coolant: GM P/N 12346290 (Dex-Cool Extended Life Antifreeze/Coolant, Orange) Brake Fluid: DOT 3 Known Issues Duramax Emisiones System: Potential issues with Diesel Particulate Filter (DPF) regeneration and Diesel Exhaust Fluid (DEF) system on earlier models. Duramax Egr Cooler: Some Duramax engines can experience EGR cooler failures. Transmission Governors: Allison transmissions can have occasional issues with governor solenoid failures. 📚 Vehicle History Brand Heritage Gmc Legacy: GMC (General Motors Truck Company) has a long history dating back to 1902, specializing in trucks and commercial vehicles. Model Evolution Sierra Hd Evolution: The Sierra HD line evolved from the Chevrolet Silverado HD. The 2013 model is part...