🏷️ Basic Information Identification Make: Subaru Model: Impreza Product Name: Subaru Impreza Service & Repair Manual 2001-2002 2004-2007 Product Description: Complete digital service and repair manual written for the Subaru Impreza; Production model years: 2001, 2002, 2004, 2005, 2006, 2007 (18,000+ pages PDF, 695mb, non-scanned) Codes Platform Codes: GC8 (pre-facelift 2001-2002), GD/GG (facelift 2004-2007) 👋 Introduction Market Position Segment: Compact/Subcompact performance sedan and hatchback, known for its AWD system and rally heritage. Competitive Analysis Competitors: Honda Civic, Toyota Corolla, Mitsubishi Lancer, Mazda3, Volkswagen Golf. Key Features All Wheel Drive: Standard symmetrical All-Wheel Drive (AWD) system across most trims and engines, a key differentiator. Engine Options: Range of Boxer engines, including naturally aspirated and turbocharged variants (WRX/STI). Performance Variants: High-performance WRX and WRX STI models offering significant power and sport-tuned chassis. Target Audience Demographic: Enthusiasts, drivers seeking all-weather capability, performance-oriented buyers. 📋 Manual Details Coverage Areas Vehicle Years Covered: 2001, 2002, 2004, 2005, 2006, 2007 Page Count Total Pages: 18000+ Manual Type Type: Service & Repair Manual Language Language: English Format Format: PDF (non-scanned, searchable) File Size Size Mb: 695 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, engine control systems (ECU/ECM), fuel injection, ignition, exhaust, turbocharged systems (WRX/STI), transmission (manual & automatic), drivetrain, clutch, differentials (front, center, rear), AWD system. Chassis: Suspension (front MacPherson strut, rear multi-link), steering, braking system (ABS, hydraulic components), wheels, tires, chassis lubrication, body structural analysis. Electrical: Wiring diagrams, lighting system, charging system, starting system, ignition system, instrument panel, power windows, power locks, HVAC controls, audio systems, cruise control, safety systems (airbags, seatbelts). Body: Exterior body panels, interior trim, seats, doors, windows, sunroof, bumpers, hoods, trunks, HVAC system components, body hardware, corrosion protection. Procedures Included Maintenance: Scheduled maintenance (oil changes, filter replacements, fluid checks), lubrication, component inspection, belt replacement, spark plug replacement, air filter replacement, brake pad/rotor replacement. Troubleshooting: Diagnostic procedures for engine, transmission, electrical systems, HVAC, brakes, suspension. Troubleshooting charts, fault codes interpretation, common problem diagnosis. Repair: Step-by-step repair instructions for all major components and systems, including engine rebuilds, transmission overhauls, brake caliper replacement, suspension arm replacement, electrical component repair. Diagnostics: OBD-II diagnostics, sensor testing, actuator testing, component resistance and voltage checks, scan tool usage, specific diagnostic routines for Subaru ECUs. Technical Depth Depth: Comprehensive (from basic maintenance to full engine and transmission rebuilds, advanced electrical diagnostics and chassis component replacement). 📊 Manual Specifications File Format Quality: High-resolution PDF, fully searchable text, non-scanned for clarity and ease of navigation. Print Quality Printability: Printable pages, suitable for professional use or personal reference. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine 2001-2002 Naturally Aspirated: 2.5L EJ25 SOHC/DOHC Flat-4 (165-175 hp, 166-177 lb-ft torque) 2004-2007 Naturally Aspirated: 2.5L EJ25 SOHC/DOHC Flat-4 (168-175 hp, 166-177 lb-ft torque) 2001-2007 Turbocharged Wrx: 2.0L EJ20 Turbocharged Flat-4 (227-230 hp, 236-241 lb-ft torque) 2004-2007 Turbocharged Wrx: 2.5L EJ25 Turbocharged Flat-4 (230-265 hp, 235-290 lb-ft torque) 2004-2007 Turbocharged Sti: 2.5L EJ25 DOHC Turbocharged Flat-4 (300 hp, 300 lb-ft torque) Performance Redline Typical: 6500 RPM (NA), 7000 RPM (Turbo) Fuel System Injection Type: Sequential Multi-port Fuel Injection (MPI) Fuel Type: Unleaded gasoline (Premium required for WRX/STI) Engine Management ECU Type: Denso or Hitachi ECUs, depending on model year and variant. 🔧 Transmission Standard Manual Transmissions: 5-speed manual (early models), 6-speed manual (STI models and later WRX). Optional Automatic Transmissions: 4-speed automatic transmission (available on non-turbo models). Features AWD Coupling: Viscous coupling center differential (manual), electronically controlled multi-plate transfer clutch (automatic), DCCD (Driver Controlled Center Differential) on STI models. Fluid Type Manual Transmission Fluid Spec: Subaru Extra-S Gear Oil (75W-90 GL-5) or equivalent. Automatic Transmission Fluid Spec: Subaru ATF HP or equivalent. 📐 Dimensions Exterior Length Inches: 173.4 - 176.2 (sedan), 169.7 - 170.9 (wagon) Width Inches: 66.7 - 68.1 Height Inches: 55.5 - 56.1 Weights Curb Weight Lbs: 2900 - 3300 (approximate, varies by trim and drivetrain) Wheelbase Inches Wheelbase: 100.0 Tires Common Tire Sizes: 205/50R16, 215/45R17, 225/45R17 (WRX), 235/40R18 (STI) Wheels Bolt Pattern: 5x100mm (most models), 5x114.3mm (STI models) 🛡️ Safety Features Ratings NHTSA Front Impact: Good (for applicable models and years) IIHS Side Impact: Acceptable or Good (varies by year and specific test) Active Features ABS: Standard Anti-lock Braking System (ABS) across most trims. Passive Features Airbags: Front dual-stage airbags, optional side-impact airbags, optional curtain airbags (later models). Seatbelts: Three-point seatbelts with pretensioners and load limiters. 💡 Technology Features Infotainment Head Unit: Factory-installed AM/FM/CD players, with optional premium audio systems on higher trims. Driver Assistance Cruise Control: Standard cruise control on most models. Connectivity Aux Input: Not standard on most models; aftermarket solutions or later facelifts may offer this. 🔧 Maintenance Service Intervals Oil Change Interval Miles: 3,750 - 7,500 miles (depending on driving conditions and oil type) Spark Plug Replacement Miles: 60,000 - 105,000 miles (depending on spark plug type: copper,...