🏷️ Basic Information Identification Make: Subaru Model: Impreza Year: 2009 Applicable Model Codes: GE*****, GH***** 👋 Introduction Market Position Vehicle Segment: Compact car (C-segment), known for its all-wheel-drive capabilities, sporty handling, and practicality. Competed against models like the Honda Civic, Toyota Corolla, Mazda3, and Volkswagen Golf. Key Features All Wheel Drive: Standard Subaru Symmetrical All-Wheel Drive system on most trims, enhancing traction and stability in various driving conditions. Engine Options: Available with naturally aspirated H4SO (2.5L) and turbocharged H4DOTC (2.5L) Boxer engines, offering a balance of performance and efficiency. Design: Third generation Impreza (GE/GH chassis) introduced a more refined and aerodynamic design compared to its predecessor, with hatchback and sedan body styles. 📋 Manual Details Coverage Areas Sections Covered: General Information, Engine (H4SO), Engine (H4DOTC), Transmission, Chassis, Body, Wiring Page Count Page Count: 3619 Manual Type Manual Type: Service Repair Manual Language Language: English Format File Format: PDF Compatibility Operating Systems: Windows (95/98/ME/XP/Vista/7), Linux, macOS 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical (H4SO and H4DOTC variants), lubrication, cooling, fuel, exhaust, ignition, engine management systems, manual and automatic transmissions, driveline components (differentials, axles). Chassis: Suspension systems (front and rear), steering system, brake system (hydraulic, ABS), wheels and tires, chassis lubrication and alignment. Body: Body construction, exterior panels, doors, windows, interior trim, seating, HVAC system, body electrical components, locks, security systems, wipers and washers. Electrical: Complete wiring diagrams, battery and charging system, starting system, lighting systems (headlights, taillights, interior), instrument cluster, audio system, power accessories (windows, locks, mirrors), engine control unit (ECU) and related sensors, SRS (Supplemental Restraint System) wiring. Procedures Included Maintenance: Routine scheduled maintenance (oil changes, filter replacements, fluid checks), lubrication points, component inspection procedures. Diagnostics: Troubleshooting charts, symptom-based diagnostics, diagnostic trouble codes (DTCs) interpretation and clearing, testing of electrical components and sensors. Repair: Step-by-step repair instructions for all major mechanical and electrical systems, component removal and installation, engine rebuild procedures, transmission overhaul, brake caliper replacement, suspension component repair. Technical Specifications: Torque specifications for fasteners, clearances and tolerances for engine components, fluid capacities, electrical specifications (voltages, resistances), diagnostic data parameters. Technical Depth Depth Of Coverage: Comprehensive from basic maintenance and inspection to detailed engine and transmission overhaul, advanced electrical system diagnostics, and body repair procedures. Suitable for professional technicians and advanced DIY enthusiasts. 📊 Manual Specifications File Format Searchability: Searchable text within the PDF document for quick information retrieval. Printability: Printable pages for on-site workshop use. Binding Type Binding Type: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) Print Quality Image Resolution: High-resolution diagrams, illustrations, and photographs (typical for factory service manuals). ⚙️ Engine Specifications Primary Engine Engine Code 1: H4SO (Naturally Aspirated Boxer) Engine Displacement 1: 2.5 Liters (2457 cc) Engine Configuration 1: Horizontally Opposed (Boxer), 4-Cylinder Bore X Stroke 1: 99.5 mm x 79.0 mm Compression Ratio 1: 9.7:1 (Typical) Horsepower 1: Approx. 170 hp @ 5600 rpm Torque 1: Approx. 170 lb-ft @ 4400 rpm Fuel System 1: Electronic Fuel Injection (MPI) Engine Code 2: H4DOTC (Turbocharged Boxer) Engine Displacement 2: 2.5 Liters (2457 cc) Engine Configuration 2: Horizontally Opposed (Boxer), 4-Cylinder, Turbocharged Bore X Stroke 2: 99.5 mm x 79.0 mm Compression Ratio 2: 8.4:1 (Typical for WRX models) Horsepower 2: Approx. 224 hp @ 5200 rpm (WRX models) Torque 2: Approx. 230 lb-ft @ 2800 rpm (WRX models) Fuel System 2: Electronic Fuel Injection (MPI) with Turbocharger Performance Engine Timing: Timing Belt Driven (for H4SO and H4DOTC engines of this era) Engine Cooling: Liquid-cooled, with thermostatically controlled fan. 🔧 Transmission Standard Transmission Type Standard: 5-Speed Manual Transmission (TY754) on many models. Optional Transmission Type Optional: 4-Speed Automatic Transmission (430LE/430LSD) on some models. Features Drivetrain: Symmetrical All-Wheel Drive (AWD) with either a viscous-coupling limited-slip center differential (manual) or electronically controlled multi-plate clutch AWD system (automatic). Clutch Type: Dry single plate clutch (manual transmission models). 📐 Dimensions Exterior Length: Hatchback: Approx. 174.0 inches; Sedan: Approx. 179.5 inches Width: Approx. 68.5 inches Height: Hatchback: Approx. 58.1 inches; Sedan: Approx. 57.1 inches Wheelbase: Approx. 103.0 inches Ground Clearance: Approx. 5.7 inches (Standard models) Weights Curb Weight: Varies by trim and body style, typically ranging from 3000 to 3300 lbs. 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (Driver and Passenger) - 2009 Model Year IIHS Front Offset: Good IIHS Side Impact: Good IIHS Roof Strength: Good Active Features Traction Control: Standard on most models. Electronic Stability Control: Standard on most models (Vehicle Dynamics Control - VDC). Antilock Brakes: Standard (ABS). Passive Features Airbags: Frontal airbags, front side-impact airbags, side-curtain airbags (standard on many trims). Seatbelts: 3-point front and rear seatbelts with pre-tensioners and force limiters. 💡 Technology Features Infotainment Audio System: Standard CD player with auxiliary input, optional premium audio system, Bluetooth connectivity may be available on higher trims or as an option. Driver Assistance Cruise Control: Standard on most models. All Wheel Drive...