🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX Model Generation: First Generation (GC/GF/GM) Codes Chassis Codes: GC8 (sedan), GF8 (wagon) Engine Codes: EJ20G (early WRX), EJ205 (later WRX) 👋 Introduction Market Position Positioning: Performance variant of the Subaru Impreza, focused on rallying heritage and driver engagement Competitive Analysis Competitors: Mitsubishi Lancer Evolution, Ford Escort Cosworth, Toyota Celica GT-Four Key Features Performance Focus: Symmetrical All-Wheel Drive, turbocharged Boxer engine, performance-tuned suspension Rally Heritage: Direct lineage from WRC-winning vehicles, emphasizing durability and handling in various conditions 📋 Manual Details Coverage Areas Covered Years: 1999, 2000 Covered Models: Impreza WRX (GC8/GF8 variants) Page Count Estimated Page Count: 1000+ Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: Full engine disassembly, assembly, inspection, overhaul, diagnostics, tuning Transmission: Manual Transmission (Type RA/STI), clutch system, drivetrain components, differentials Suspension: Front and rear suspension systems, shock absorbers, springs, control arms, bushings, alignment Brakes: Brake system components (calipers, rotors, pads), hydraulic system, ABS (if applicable), parking brake Electrical: Wiring diagrams, ECU, sensors, lighting, starting and charging system, ignition system, audio system Fuel System: Fuel pump, injectors, fuel filter, fuel lines, evaporative emissions control Cooling System: Radiator, water pump, thermostat, coolant hoses, fan system Exhaust System: Exhaust manifolds, catalytic converter, mufflers, pipes, O2 sensors Body And Chassis: Body panel removal and installation, frame alignment, glass, seals, interior trim Steering: Power steering system, steering column, steering rack Procedures Included Maintenance: Routine maintenance, oil changes, filter replacements, spark plug replacement, timing belt replacement Troubleshooting: Diagnostic procedures, fault code interpretation, common issue resolution Repair: Detailed step-by-step repair instructions for all major components Overhaul: Engine and transmission overhaul procedures, including torque specifications and clearances Calibration: Wheel alignment specifications, sensor calibration procedures Technical Depth Depth: Comprehensive, from basic adjustments to full engine rebuilds Diagnostic Tools: Information on Subaru Select Monitor (SSM) or equivalent diagnostic systems 📊 Manual Specifications File Format Digital Format: PDF Searchability: Searchable text content for quick information retrieval Print Quality Print Quality: High-resolution scans suitable for printing Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Horizontally Opposed (Boxer) Turbocharged 4-Cylinder Displacement: 2.0 Liters (1994cc) Bore X Stroke: 92.0 mm x 75.0 mm Compression Ratio: 8.0:1 Performance Horsepower: 215-280 PS (158-206 kW; 212-276 hp) depending on market and specific WRX variant (e.g., STi) Torque: 290-350 Nm (214-258 lb-ft) depending on market and specific WRX variant Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) with Sequential Injection Turbocharger: TD04-13G or similar IHI turbocharger with intercooler Recommended Fuel: Premium Unleaded Gasoline (95 RON or higher) 🔧 Transmission Standard Transmission Type: 5-Speed Manual Transmission Optional Optional Transmission: N/A for WRX performance models of this era Features Drivetrain: Symmetrical All-Wheel Drive (AWD) with viscous center differential, driver-controlled center differential (DCCD) on some STi variants Gear Ratios: Specific gear ratios vary by model and market; detailed in manual Transmission Fluid Type: GL-5 75W-90 Hypoid Gear Oil (refer to manual for specific Subaru part numbers and capacities) 📐 Dimensions Exterior Length: Approx. 4,340 mm (170.9 in) for sedan, 4,405 mm (173.4 in) for wagon Width: Approx. 1,730 mm (68.1 in) Height: Approx. 1,405 mm (55.3 in) for sedan, 1,420 mm (55.9 in) for wagon Wheelbase: Approx. 2,515 mm (99.0 in) Weights Curb Weight: Approx. 1,350-1,450 kg (2976-3197 lbs) depending on configuration Gross Vehicle Weight Rating: Refer to vehicle VIN plate or manual 🛡️ Safety Features Ratings Fiat Crash Test Results: N/A for this specific model year, as FIAT did not exist then. NHTSA Ratings: Not directly available for this era's specific WRX model in many markets. General Impreza safety was average for its time. Active Features ABS: Anti-lock Braking System (ABS) often standard or optional depending on market and trim AWD: Symmetrical All-Wheel Drive system provides enhanced traction and stability Passive Features Airbags: Driver and front passenger airbags standard Seatbelts: 3-point seatbelts with pre-tensioners 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD stereo system, often with 4-6 speakers. Aftermarket upgrades common. Gauges: Performance-oriented dashboard with tachometer, speedometer, boost gauge (on some models), and auxiliary gauges. Driver Assistance Cruise Control: Optional or standard depending on market and trim level Traction Control: Generally not present on this era's WRX; AWD system is the primary traction management Connectivity Connectivity Features: Limited to factory-fitted audio systems; no modern Bluetooth or USB connectivity without aftermarket modification. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-5,000 miles (5,000-8,000 km) or 6 months, depending on driving conditions (refer to manual) Timing Belt Replacement: Every 60,000-100,000 miles (100,000-160,000 km) or 5-7 years, critical for interference engines Spark Plug Replacement: Refer to manual; typically 30,000-60,000 miles (50,000-100,000 km) depending on plug type Fluid Specifications Engine Oil Type: 5W-30 or 10W-30 Synthetic/Semi-Synthetic (API SG or higher, ACEA A2-96 or...