🏷️ Basic Information Identification Make: Subaru Model: Impreza Year: 2006 Body Style: Sedan, Wagon Codes Chassis Code: GDA (WRX Sedan), GDB (STI Sedan), GGA (WRX Wagon), GGB (STI Wagon) Engine Codes: EJ205 (2.0L Turbo), EJ255 (2.5L Turbo), EJ253 (2.5L Naturally Aspirated) 👋 Introduction Market Position Vehicle Segment: Compact car (C-segment) Key Selling Points: Symmetrical All-Wheel Drive (standard on most trims), turbocharged performance variants (WRX, STI), rally heritage, reliability. Competitive Analysis Primary Competitors: Honda Civic Si, Mitsubishi Lancer Evolution, Volkswagen GTI, Mazda3. Key Features AWD System: Standard Symmetrical All-Wheel Drive (except for specific US market base models in some years). Performance Variants: Subaru Impreza WRX and WRX STI offered with significant performance upgrades. 📋 Manual Details Coverage Areas Manual Type: Full Service & Repair Manual Language: English Format: Digital (likely PDF) Page Count Estimated Page Count: 1000+ 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, timing belt replacement, head gasket repair, piston and ring replacement, crankshaft and bearing service, cylinder head reconditioning. Engine Electrical: Ignition system diagnosis and repair, fuel injection system, sensor testing and replacement (MAF, O2, MAP, TPS, Crank/Cam sensors), starter and alternator testing, ECU/ECM diagnostics. Fuel System: Fuel pump testing, fuel injector cleaning and replacement, fuel pressure regulation, fuel filter replacement. Cooling System: Radiator service, water pump replacement, thermostat testing, coolant flushing and replacement, fan clutch/motor diagnosis. Exhaust System: Catalytic converter replacement, muffler and pipe repair/replacement, exhaust manifold gasket service. Transmission Manual: Clutch replacement, gearbox overhaul, gear selection linkage adjustment, transmission fluid service. Transmission Automatic: Automatic transmission fluid service, torque converter inspection, transmission control module (TCM) diagnostics, internal component repair (if covered). Drivetrain AWD: Center differential service, front and rear differential service, driveshaft and CV joint inspection/replacement, viscous coupling unit (VCU) service (if applicable). Steering System: Power steering pump and rack replacement, fluid flush, steering column repair, tie rod end and ball joint replacement. Suspension System: Strut and shock absorber replacement, coil spring replacement, control arm bushing service, sway bar link replacement, alignment specifications. Brake System: Brake pad and rotor replacement, caliper service, brake line replacement, master cylinder service, ABS system diagnostics, parking brake adjustment. Electrical System Lighting: Headlight, taillight, interior light bulb replacement, headlight aiming, fuse and relay identification and testing. Electrical System Accessories: Wiper system diagnosis and repair, power window and lock system troubleshooting, horn circuit, power outlet service. Body And Frame: Door panel removal, bumper cover replacement, body panel alignment, rust repair procedures, chassis lubrication points. Climate Control: HVAC system diagnosis, refrigerant recharge, blower motor replacement, heater core and evaporator core service, cabin air filter replacement. Safety Systems: Airbag system diagnosis, seat belt repair, SRS module troubleshooting. Diagnostics: OBD-II diagnostic trouble code (DTC) lookup, common fault diagnosis for various systems, troubleshooting flowcharts. Procedures Included Maintenance: Oil and filter change, air filter replacement, spark plug replacement, coolant flush, brake fluid flush, differential fluid change, fuel filter replacement. Repair: Component replacement, system diagnostics and repair, reassembly of major sub-assemblies. Rebuild: Detailed procedures for engine and transmission rebuilding, including torque specifications and clearances. Troubleshooting: Step-by-step guides for diagnosing and resolving common and uncommon vehicle issues. Wiring Diagrams: Comprehensive electrical wiring diagrams for all vehicle systems. Technical Depth Depth Level: Comprehensive (from basic maintenance to full rebuilds) Diagnostic Tools: Information on required diagnostic tools and procedures (e.g., OBD-II scanner, multimeter). 📊 Manual Specifications File Format Digital Format: PDF Searchability: Text-searchable (if well-formatted PDF) Print Quality Illustration Quality: High-resolution diagrams and photos (typical for good digital manuals) Binding Type Binding Style: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Base Engine: 2.5L Naturally Aspirated Boxer-4 (EJ253) Base Engine Power: Approx. 173 hp @ 5,600 rpm Base Engine Torque: Approx. 166 lb-ft @ 4,000 rpm Performance Wrx Engine: 2.5L Turbocharged Boxer-4 (EJ255) Wrx Engine Power: Approx. 230 hp @ 5,200 rpm Wrx Engine Torque: Approx. 235 lb-ft @ 3,000 rpm Sti Engine: 2.5L Turbocharged Boxer-4 (EJ257) Sti Engine Power: Approx. 300 hp @ 6,000 rpm Sti Engine Torque: Approx. 300 lb-ft @ 4,000 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline (premium recommended for turbo models) Valvetrain Engine Layout: Horizontally opposed (Boxer), DOHC, 16 valves 🔧 Transmission Standard Base Transmission: 5-speed Manual Transmission Optional Optional Transmission: 4-speed Automatic Transmission (with Sportshift on some trims) Features AWD System Transmission Link: All-wheel drive system integrated with transmission (e.g., DCCD on STI). Fluid Specifications Manual Transmission Fluid: API GL-5, SAE 75W-90 (check specific subaru specs for most accurate, e.g., Subaru Extra-S) Automatic Transmission Fluid: Subaru ATF-HP (check specific manual for correct type) 📐 Dimensions Exterior Wheelbase: Approx. 103.1 inches (2,619 mm) Length: Sedan: Approx. 179.7 inches (4,565 mm); Wagon: Approx. 177.7 inches (4,515 mm) Width: Approx. 69.9 inches (1,775 mm) Height: Sedan: Approx. 57.7 inches (1,465 mm); Wagon: Approx. 56.1 inches (1,425 mm) Weights Curb Weight: Approx. 3,000 - 3,400 lbs...