๐ท๏ธ Basic Information Identification Make: Subaru Model: Impreza Year: 2003 Product Name: Subaru Impreza 2003 Service Repair Manual Codes Chassis Code: GD/GG ๐ Introduction Market Position Segment: Compact/Subcompact Sedan and Wagon, known for rally heritage and AWD capability Competitive Analysis Competitors: Honda Civic, Toyota Corolla, Mitsubishi Lancer, Mazda3 Key Features All Wheel Drive: Standard Symmetrical All-Wheel Drive (AWD) system for superior traction Performance Engines: Durable Boxer engines, including turbocharged variants for performance models (WRX) Reliability: Reputation for robust engineering and long-term durability Manual Utility Target Audience: Do-it-yourself mechanics and professional technicians ๐ Manual Details Coverage Areas Coverage Type: Complete Factory Service Manual Page Count Approximate Pages: 1500+ Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital (PDF) ๐ Manual Coverage Systems Covered Engine: Detailed diagnosis, repair, and overhaul for all gasoline engines (EJ20, EJ25 variations) Transmission: Manual and Automatic transmissions: diagnosis, overhaul, clutch, torque converter, gearboxes Drivetrain: All-Wheel Drive (AWD) system, differentials (front, rear, center), driveshafts, CV joints Suspension: Front and rear suspension systems, struts, springs, control arms, alignment specifications Brakes: Hydraulic brake system, ABS, discs, pads, calipers, lines, bleeding procedures Steering: Power steering system, rack and pinion, steering column, linkages Electrical: Complete wiring diagrams, charging system, starting system, ignition system, lighting, accessories, fuses, relays HVAC: Heating, Ventilation, and Air Conditioning system diagnosis and repair Body: Body panels, doors, hood, trunk, glass, seals, interior trim, collision repair information Diagnostics: On-Board Diagnostics (OBD-II) system, diagnostic trouble codes (DTCs), troubleshooting charts Procedures Included Maintenance: Scheduled maintenance, oil changes, fluid checks, filter replacements, spark plugs, belts Repair: Component removal, installation, and adjustment for all major systems Troubleshooting: Systematic diagnostic procedures for common and complex issues Overhaul: Detailed instructions for complete engine, transmission, and differential rebuilds Torque Specifications: Precise torque values for all fasteners and critical components Special Tools: Identification and usage of Subaru-specific tools required for repairs Technical Depth Depth: Comprehensive: Covers basic maintenance to complete engine/transmission rebuilds and advanced diagnostics ๐ Manual Specifications File Format Quality: High-resolution scanned pages, clear text and diagrams Searchability: Fully searchable text for quick information retrieval Print Quality Readability: Easy-to-read text sections Diagram Quality: Top-quality diagrams and illustrations Binding Type Binding: N/A (Digital) Paper Type Paper: N/A (Digital) โ๏ธ Engine Specifications Primary Engine Engine Code Standard: EJ253 (2.5L Naturally Aspirated) Engine Code Performance: EJ205 (2.0L Turbocharged - WRX) Performance Horsepower 2.5L: 165 hp @ 5600 rpm Torque 2.5L: 166 lb-ft @ 4000 rpm Horsepower 2.0L Turbo: 227 hp @ 5600 rpm (WRX) Torque 2.0L Turbo: 250 lb-ft @ 3000 rpm (WRX) Fuel System Injection Type: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (87 Octane recommended, 91+ for WRX) Engine Features Configuration: Horizontally-opposed (Boxer) 4-cylinder ๐ง Transmission Standard Transmission Type Standard: 5-speed Manual Optional Transmission Type Optional: 4-speed Automatic Features AWD Coupling: Symmetrical All-Wheel Drive with viscous coupling center differential Fluid Specifications Automatic Fluid Type: Subaru ATF HP (or Dexron III equivalent) Manual Fluid Type: Subaru Extra-S Gear Oil API GL-5 75W-90 ๐ Dimensions Exterior Wheelbase Sedan: 2525 mm (99.4 in) Wheelbase Wagon: 2535 mm (99.8 in) Overall Length Sedan: 4405 mm (173.4 in) Overall Length Wagon: 4409 mm (173.6 in) Weights Curb Weight Est: 1300-1450 kg (2866-3197 lbs) Gvw Est: 1850 kg (4078 lbs) ๐ก๏ธ Safety Features Ratings NHTSA Front Impact: 4/5 Stars (Driver/Passenger) NHTSA Side Impact: 4/5 Stars (Front/Rear) Active Features ABS: Anti-lock Braking System (ABS) standard on most trims Passive Features Airbags: Front airbags, optional side airbags Seatbelts: 3-point seatbelts with pretensioners Body Structure: Reinforced safety cage construction ๐ก Technology Features Infotainment Head Unit: Base models featured AM/FM/CD players; higher trims offered optional premium audio systems. Driver Assistance Traction Control: Traction Control System (TCS) available on some higher trims. Connectivity Aux Input: Not commonly available; aftermarket solutions may exist. ๐ง Maintenance Service Intervals Oil Change Interval: Every 3,750 miles or 3 months (whichever comes first), or 7,500 miles/6 months with synthetic oil and filter. Engine Air Filter: Inspect every 15,000 miles, replace as needed. Cabin Air Filter: Replace annually or every 15,000 miles. Spark Plugs: Replace every 60,000 miles (Iridium type). Timing Belt: 90,000 miles or 7 years (critical replacement interval for EJ25 and EJ20 engines). Fluid Specifications Engine Oil Capacity: 4.5 US quarts (4.3 L) with filter (EJ253), 4.8 US quarts (4.5 L) with filter (EJ205) Engine Oil Viscosity: SAE 5W-30 (API SJ or higher) Coolant Type: Subaru Super Coolant (Blue) or equivalent; mixture ratio 50/50 with distilled water. Known Issues Head Gaskets: Common issue on EJ25 engines, particularly earlier revisions. Manual details inspection and replacement procedures. Turbo Wear: Potential for turbocharger wear/failure on WRX models if not properly maintained; manual covers turbo diagnostics and replacement. Clutch Wear: Can experience premature clutch wear, especially in performance driving; manual provides clutch replacement steps. Radiator Leaks: Plastic tanks on radiators can become brittle and leak over time. ๐ Vehicle History Brand...