This manual covers the 2012 Chevrolet Aveo / Sonic, a subcompact vehicle designed for efficient urban mobility and everyday use. Built on GM's global B-segment platform, this model offers a blend of practicality and modern features, with engine options including a 1.4L inline-4 cylinder engine available in naturally aspirated (LUJ) and turbocharged (LUV) configurations, producing approximately 100-108 hp and 138 hp respectively. The vehicle is equipped with either a 5-speed manual or an optional 6-speed automatic transmission and features a standard Anti-lock Braking System, with available Traction Control and Electronic Stability Control for enhanced safety. Its dimensions include a wheelbase of 99.4 inches and a length of 161.4 inches, making it a compact yet capable choice. This comprehensive factory service repair manual provides detailed information essential for the maintenance, diagnosis, and repair of your 2012 Chevrolet Aveo / Sonic. It covers all major systems, including engine mechanicals, fuel, cooling, drivetrain, chassis, suspension, steering, and electrical systems, complete with wiring diagrams. Within its pages, you will find routine maintenance procedures, component repair and replacement instructions, and in-depth troubleshooting and diagnostic procedures. This English-language resource is designed for technicians, mechanics, and DIY enthusiasts, offering factory-level technical data and insights to ensure the longevity and optimal performance of your vehicle. 🏷️ Basic Information Identification Make: Chevrolet Model: Aveo / Sonic Year: 2012 Market Segment: Subcompact 👋 Introduction Market Position Target Audience: Technicians, Mechanics, DIY Enthusiasts, Anyone Involved in Car Repairs Competitive Analysis Value Proposition: Low Price, Great Quality, Instant Access, Direct Support Key Features Data Accuracy: Technical data kept like original manufacturer book Included Data: Circuits, Diagrams, Equipment Datasheets 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Manual Language: English Format: PDF Download Completeness: Comprehensive Factory Full Service and Repair Content Type: Repair and Service Information, Technical Data, Diagrams 📖 Manual Coverage Systems Covered Engine Mechanical: Engine Top End, Engine, Engine Lubrication System, Engine Removal/Installation Fuel System: Fuel System Cooling System: Cooling System Drivetrain: Clutch, Drive, Transmission, Final Drive Chassis Suspension Steering: Chassis, Wheels/Tires, Brakes, Suspension, Steering, Frame Electrical Systems: Electrical System, Wiring Diagram Body Structure: Frame, Body Repair, Exterior Panels Procedures Included Maintenance: Routine Maintenance Procedures Repair: Component Repair and Replacement Diagnostics: Troubleshooting and Diagnostic Procedures Bodywork: Body Repair Procedures Electrical Diagnostics: Component testing, circuit tracing, wiring harness repair Technical Depth Depth Level: Complete Factory Level for Technicians and Mechanics 📊 Manual Specifications File Specifications File Format Detail: PDF (Printable, potential for larger files requiring unzipper) Print Quality: Great Quality, Hundreds or Thousands of Printable Pages Binding Type Binding: Digital Download (Not Applicable for Printed Binding) Paper Type Paper Type: Not Applicable (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Family: GM MGE (Global Small Engine family) Engine Displacement Liters: 1.4 L Engine Code Common: LUJ (Turbocharged), LUV (Naturally Aspirated) Engine Architecture: Inline-4 Cylinder Valvetrain: DOHC (Dual Overhead Camshafts), 16 Valves Performance Horsepower Approx Naturally Aspirated: 100-108 hp Horsepower Approx Turbocharged: 138 hp Torque Approx Turbocharged: 148 lb-ft Fuel System Fuel Delivery: Port Fuel Injection (PFI) or Gasoline Direct Injection (GDI) for Turbocharged models Fuel Type: Unleaded Gasoline 🔧 Transmission Standard Transmission Type Standard: 5-Speed Manual Optional Transmission Type Optional: 6-Speed Automatic (Generally with 1.4L Turbo) Features Clutch Type: Dry Single Plate Clutch (Manual Transmission) 📐 Dimensions Exterior Wheelbase Inches: 99.4 inches (2525 mm) Length Inches: 161.4 inches (4100 mm) Width Inches: 67.0 inches (1702 mm) Height Inches: 58.1 inches (1476 mm) Weights Curb Weight Lbs Approx: 2500-2700 lbs (depending on configuration) 🛡️ Safety Features Ratings NHTSA Rollover Rating: 4/5 stars (for most configurations) IIHS Top Safety Pick: Not consistently awarded for 2012 model year across all tests. Active Features ABS: Standard Anti-lock Braking System Traction Control: Available Traction Control System (TCS) Stability Control: Available Electronic Stability Control (ESC) Passive Features Airbags: Frontal, Side-Impact, and Curtain Airbags (configuration dependent) 💡 Technology Features Infotainment Infotainment System: Chevrolet MyLink infotainment system available on some trims Connectivity Options: Bluetooth connectivity, USB ports, auxiliary audio input Driver Assistance Parking Assist: Available Rear Park Assist (sensors) Camera System: Available Rearview Camera 🔧 Maintenance Service Intervals Oil Change Interval Miles: 7,500 miles or 6 months (synthetic oil recommended) Air Filter Replacement Miles: 30,000 miles or 2 years Spark Plug Replacement Miles: 100,000 miles (if equipped with iridium plugs) Fluid Specifications Engine Oil Type: API SN, ACEA C3, or equivalent, SAE 5W-30 (check manual for specific engine) Coolant Type: Dex-Cool (Orange) or equivalent silicate-free, extended-life coolant Transmission Fluid Type Automatic: Dexron VI (or equivalent) Known Issues Common Problem 1: Turbocharger issues (oil leaks, premature failure on early 1.4T models) Common Problem 2: Water pump leaks (particularly on the 1.4L engine) Common Problem 3: Clutch wear (especially in stop-and-go traffic for manual transmissions) Common Problem 4: Power steering pump issues (on hydraulic systems, though electric power steering became more common) 📚 Vehicle History Brand Heritage Chevrolet Legacy: Chevrolet,...