🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Model Generation: Second Generation (GD/GG) Model Years Covered: 2001, 2002 Chassis Codes: GDB (Sedan), GGB (Wagon) 👋 Introduction Market Position Positioning: The 2001-2002 Subaru Impreza WRX STI (GD/GG chassis) represented a significant step in rally-bred performance for Subaru, building on the legacy of previous generations and introducing new technologies. This manual is essential for owners and enthusiasts seeking to maintain or restore these highly capable vehicles. Competitive Analysis Competitors: Competes with performance sedans and hatchbacks such as Mitsubishi Lancer Evolution, Ford Focus RS, Volkswagen Golf GTI/R32, and Audi S3 of the era. Key Features Features: Symmetrical All-Wheel Drive, turbocharged Boxer engine, performance-tuned suspension, aerodynamic enhancements, rally-inspired interior and exterior styling. Manual Value Proposition Value: Provides the same detailed technical information used by Subaru technicians, enabling accurate diagnosis, maintenance, and repair, thereby preventing costly mistakes and ensuring optimal performance and longevity of the vehicle. Instant download eliminates shipping delays. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Maintenance, Diagnostics, Troubleshooting Page Count Estimated Page Count: Approximately 2000+ pages (typical for comprehensive factory service manuals) Manual Type Type: Factory Service Manual (FSM) Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine disassembly, assembly, rebuilding, lubrication, cooling, timing belt/chain, pistons, rods, crankshaft, cylinder head, valves Engine Performance: Fuel injection, ignition system, emissions control, turbocharger system, intercooler system, engine diagnostics Transaxle Manual: Clutch, gearbox disassembly, assembly, shift mechanism, drive shafts, differential Transaxle Automatic: Not applicable for WRX STI models of this generation (typically manual transmission only) Steering: Power steering system, steering column, steering gear, tie rods, alignment specifications Suspension: Front and rear suspension components, shock absorbers, springs, control arms, bushings, wheel bearings, alignment procedures and specifications Brakes: Brake system diagnostics, master cylinder, brake lines, calipers, rotors, pads, parking brake, ABS system, brake fluid specifications Body Exterior: Body panel removal/installation, doors, hood, trunk, bumpers, glass, sunroof, exterior trim, corrosion protection Body Interior: Interior trim panels, seats, dashboard, headliner, carpeting, airbags, seat belts Heater And Air Conditioner: HVAC system components, climate control, refrigerant handling, diagnostics, repair Electrical System: Battery, charging system, starting system, lighting, wipers, horn, power windows, power locks, instrument cluster, ECU, sensors, actuators Wiring Diagrams: Comprehensive color-coded wiring diagrams for all electrical systems Procedures Included Routine Maintenance: Oil changes, fluid checks/changes, filter replacements, spark plug replacement, brake pad inspection/replacement Diagnostic Procedures: Troubleshooting flowcharts, diagnostic trouble codes (DTCs), symptom-based troubleshooting Repair Procedures: Step-by-step instructions for component removal, repair, and reinstallation Special Tool Procedures: Usage and identification of Subaru-specific tools for various repair tasks Engine Rebuild: Complete procedures for engine disassembly, inspection, machining, and reassembly Transmission Rebuild: Detailed steps for transmission overhaul, including gear replacement and seal fitting Timing Belt Replacement: Precise procedures for timing belt and tensioner replacement, critical for EJ20 engine longevity Turbocharger Service: Turbocharger inspection, repair, and replacement procedures Technical Depth Depth: Comprehensive: Covers everything from basic maintenance to full engine and transmission rebuilds, including detailed electrical diagnostics and body repair. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format) Print Quality Print Recommendation: High-resolution, printable quality for individual page printing as needed. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: EJ207 Engine Type: Horizontally-opposed (Boxer), 4-cylinder, turbocharged, intercooled Displacement: 1994 cc (2.0 Liters) Bore X Stroke: 92.0 mm x 75.0 mm Compression Ratio: 8.0:1 Power Output Ps: 280 PS (276 hp) @ 6000 rpm (JDM specification, actual output often higher) Torque Output Nm: 343 Nm (253 lb-ft) @ 4000 rpm (JDM specification) Performance Redline: 7500 rpm Fuel System Fuel Delivery: Multi-point fuel injection (MPI) with sequential ignition, Electronic Throttle Control (ETC) Fuel Type: Unleaded gasoline, premium octane (95-98 RON recommended) Turbocharger: IHI VF36 (Twin-Scroll Ball Bearing Turbocharger) Intercooler: Air-to-air top-mounted intercooler 🔧 Transmission Standard Type: 6-speed manual transmission Gear Ratios: Specific ratios available within the manual; typically close-ratio for performance driving. Clutch Type: Hydraulically operated, single dry plate Features Drivetrain: Symmetrical All-Wheel Drive (AWD) with Driver Controlled Center Differential (DCCD) on some models/markets. 📐 Dimensions Exterior Length: 4405 mm (Sedan), 4405 mm (Wagon) Width: 1770 mm Height: 1410 mm (Sedan), 1435 mm (Wagon) Wheelbase: 2535 mm Track Width Front: 1515 mm Track Width Rear: 1505 mm Weights Curb Weight: Approximately 1400-1450 kg (depending on sedan/wagon and options) Gross Vehicle Weight Rating: Varies by market specification, typically around 1900 kg 🛡️ Safety Features Ratings NHTSA Front Impact: 4-star (for driver and passenger in similar models of the era, specific ratings for 2001-2002 STI may vary by market) Active Features ABS: Standard Anti-lock Braking System (ABS) AWD: Standard Symmetrical All-Wheel Drive for enhanced traction and stability. Passive Features Airbags: Front driver and passenger airbags. Side airbags may be optional or market-dependent. Seatbelts: 3-point front and rear seatbelts with pre-tensioners....