🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX Model Code: GC8 (for WRX variants) Production Years Covered: 1999, 2000 Trim Levels Covered By Manual: RS, L, Outback (Note: WRX specific repairs are the focus, but general Impreza models are referenced for context) Chassis Codes: GC8 (typically associated with WRX variants of this generation) 👋 Introduction Market Position Market Position: Targeted at owners and technicians seeking definitive, factory-accurate repair information for the 1999-2000 Subaru Impreza WRX, a performance variant of the popular Impreza model. Value Proposition Key Benefit: Inexpensive way to keep the vehicle running trouble-free by providing complete factory service and repair data. Uniqueness Original Documentation: Genuine Subaru product, ensuring accuracy and completeness compared to aftermarket alternatives. 📋 Manual Details Coverage Coverage Areas: Maintenance, Repair, Parts, Diagnostics, Troubleshooting, Service Specifications, Emission Control, Electrical Systems, Chassis, Body, HVAC, Safety Systems Format Manual Type: Factory Service Repair Manual Manual Format: Digital (Software/Interactive CD Platform) Media: Software on CD (delivered via download) Language Language: English Platform Compatibility Platform Compatibility: Windows, Macintosh, Linux Printability Print Quality: High-definition, printable instructions and illustrations Printing Options: Print entire manual or selected sections Content Source Manual Source: Genuine Subaru Factory Documentation 📖 Manual Coverage Systems Systems Covered: Engine Mechanical, Engine Control System, Fuel System, Intake & Exhaust Systems, Cooling System, Lubrication System, Ignition System, Starting & Charging System, Automatic Transmission, Manual Transmission, Clutch, Transfer Case, Drive Shaft, Differential, Axles, Suspension (Front & Rear), Wheel & Tire, Brake Control System, Brake System, Parking Brake, Steering Column, Power Steering, Air Conditioning (A/C), Supplemental Restraint System (SRS), Seat Belts, Engine Immobilizer, Cruise Control, Wiper & Washer System, Door Lock System, Meter & Instrument Panel, Audio/Visual Systems, Park Assist/Monitoring, Horn, Other Systems, Windshield/Glass/Mirrors, Exterior Body Panels, Interior Trim, Multiplex/CAN Communication Procedures Procedures Included: Scheduled Maintenance, Engine Overhaul, Fuel System Diagnosis and Repair, Ignition System Testing, Cooling System Servicing, Lubrication System Maintenance, Transmission Removal and Installation, Clutch Service, Driveline Component Service, Suspension Alignment and Repair, Brake System Overhaul, Power Steering System Service, A/C System Servicing, SRS System Diagnosis and Repair, Electrical System Troubleshooting, Wiring Diagrams, Diagnostic Trouble Codes (DTCs) with procedures, Body Panel Repair and Adjustment, Interior Component Service Depth Technical Depth: Comprehensive factory-level detail, suitable for professional technicians and advanced DIYers. Includes step-by-step repair instructions with diagrams and photographs. Diagnostics Diagnostic Coverage: Diagnostic Trouble Codes (DTCs) with associated diagnostic procedures and troubleshooting trees. Illustrations Illustration Types: High-definition diagrams and photographs 📊 Manual Specifications File Details File Format: Software/Interactive CD Platform (delivers content in a user-friendly interface) Content Quality Content Type: Original Factory Content (Not Aftermarket) Illustration Quality: High-definition Navigation Navigation Features: Fully indexed by bookmarks and keywords for efficient browsing Binding Type Binding Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Horizontally-opposed (Boxer) 4-cylinder Engine Variants Engine Displacements: 2.5L H4 (EJ25 engine family, likely EJ257 for WRX), 2.2L H4 (EJ22 engine family for non-WRX models covered for context) Performance Wrx Horsepower Wrx Est: Approx. 215-218 hp (for JDM WRX, US WRX models may have slightly different tuning or power output based on market regulations) Torque Wrx Est: Approx. 217-220 lb-ft (for JDM WRX) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Induction Induction Type: Turbocharged, Intercooled Engine Management Engine Management System: ECU (Engine Control Unit) with detailed diagnostic parameters. 🔧 Transmission Standard Standard Transmission Type: 5-speed Manual Transmission (Synchro Mesh) Optional Optional Transmission Type: 4-speed Automatic Transmission (May be available on non-WRX variants, less common on WRX) Features Drivetrain: All-Wheel Drive (AWD) with viscous coupling center differential and Subaru's Driver Controlled Center Differential (DCCD) on some WRX models. Fluid Specifications Manual Transmission Fluid: Refer to manual for specific GL-5 gear oil recommendations (e.g., 75W-90 or 80W-90). Automatic Transmission Fluid: Subaru ATF-HP or equivalent specified by manufacturer. 📐 Dimensions Exterior Body Styles: Sedan (typically WRX variant), Coupe (some markets/variants), Wagon (Outback Sport) Weights Curb Weight Approx Kg: 1300-1400 kg (depending on model and trim) Wheels Tires Standard Wheel Size: 16 inch (often alloy) Standard Tire Size: 205/50R16 or 215/40R17 (for WRX) Wheel Bolt Pattern: 5x100mm 🛡️ Safety Features Passive Features Airbags: Driver and Passenger Frontal Airbags Seat Belts: 3-point ELR seat belts with pretensioners and force limiters. Structural Safety: Reinforced chassis and safety cell construction. Active Features ABS: Anti-lock Braking System (ABS) standard on WRX models. Traction Control: Not typically standard on these early WRX models, but might be present on specific market variants. Manual would detail its operation. Ratings NHTSA Front Crash Rating: Refer to specific NHTSA records for 1999-2000 Impreza; documentation may vary by model year and market. 💡 Technology Features Infotainment Audio System: Factory AM/FM/Cassette/CD player with optional premium sound systems. Driver Assistance Cruise Control: Standard feature on most models, covered in the manual. Connectivity Multiplex Communication: Early forms of multiplex communication and CAN bus integration may be present, detailed in the electrical section. 🔧 Maintenance...