Product Name:
Subaru Impreza 2001-2007 Full Service Repair Manual
Model Years Covered:
2001, 2002, 2003, 2004, 2005, 2006, 2007
Chassis Codes:
GD, GG (2nd Generation)
Positioning:
The Subaru Impreza of this generation solidified its reputation as a capable all-wheel-drive compact car with strong rally heritage, appealing to enthusiasts and those prioritizing all-weather traction.
Competitors:
Competed against models like the Mitsubishi Lancer, Honda Civic Si, Mazda3, and Volkswagen Golf GTI.
Standout Features:
Symmetrical All-Wheel Drive (standard on most trims), boxer engine layout, sporty handling, practical hatchback and sedan body styles, turbocharged WRX and STI variants for performance enthusiasts.
Technical Scope:
Comprehensive maintenance, repair, and troubleshooting for all major systems.
Estimated Pages:
~1500-2000 (typical for comprehensive manuals of this era and coverage)
Type:
Factory Service Manual (FSM) / Repair Manual
Format:
Digital (PDF) or Print (likely purchased from aftermarket providers replicating FSM content)
Powertrain:
Engine mechanical, fuel and emissions control, cooling system, lubrication system, ignition system, exhaust system, engine electrical, manual transmission, automatic transmission, all-wheel drive system.
Chassis:
Suspension (front and rear), steering system, brake system (front and rear, ABS), wheels and tires.
Body And Electrical:
Body construction and repair, interior trim, exterior trim, heating and air conditioning (HVAC), lighting, instrumentation, infotainment (basic), power accessories, wiring diagrams, diagnostic trouble codes (DTCs).
Maintenance:
Scheduled maintenance, fluid changes (oil, coolant, transmission, differential), filter replacements, spark plug replacement, belt inspection/replacement, brake pad/rotor replacement.
Repair:
Engine component overhaul (pistons, rings, valves, bearings), cylinder head repair, transmission overhaul, clutch replacement, driveshaft and CV joint repair, suspension component replacement (shocks, struts, bushings), steering rack repair/replacement, brake caliper/master cylinder rebuild, electrical component diagnosis and replacement.
Troubleshooting:
Diagnostic procedures for common drivability issues, starting problems, electrical faults, HVAC malfunctions, brake system performance issues.
Depth:
Highly detailed, suitable for professional technicians and advanced DIY enthusiasts. Includes torque specifications, measurement tolerances, diagnostic flowcharts, and wiring diagrams.
Digital Format Details:
Searchable PDF, often with high-resolution diagrams and schematics.
Print Quality Assessment:
If printed, typically sourced from original or high-quality reproductions; clear text and legible diagrams.
Binding:
If printed, usually perfect bound or spiral bound for lay-flat usability.
Paper Quality:
If printed, typically on durable, semi-gloss paper suitable for workshop environments.
Engine Codes And Displacements:
EJ20 (2.0L naturally aspirated/turbocharged), EJ25 (2.5L naturally aspirated/turbocharged SOHC/DOHC). Common variants include EJ201, EJ202, EJ251, EJ252, EJ253, EJ255 (WRX), EJ257 (STI).
Horsepower And Torque Ranges:
Naturally aspirated models: ~120-165 HP, ~140-170 lb-ft torque. Turbocharged WRX models: ~227-265 HP, ~240-280 lb-ft torque. STI models: ~300 HP, ~300 lb-ft torque. (Figures vary by year and specific engine/trim).
Induction Type:
Multi-point fuel injection (MPFI) for naturally aspirated engines. Sequential multi-port fuel injection (S-MPFI) with intercooler for turbocharged WRX/STI models.
Coolant Type:
Subaru Super Coolant (Blue) or equivalent silicate-free, long-life coolant. Capacity approx. 7.0-8.0 quarts.
Engine Oil Type:
10W-30 or 5W-30 synthetic blend or full synthetic, depending on climate and application. Oil capacity approx. 4.5-5.0 quarts.
Transmission Types Standard:
5-speed manual transmission (TY75x series) and 4-speed automatic transmission (TZ1A series).
Transmission Types Optional:
Certain markets or performance models might have specific manual or automatic variants, including 6-speed manual for STI models.
AWD System Integration:
Symmetrical All-Wheel Drive system with viscous coupling center differential (manual) or electronically controlled transfer clutch (automatic) for torque distribution. STI models feature Driver Controlled Center Differential (DCCD).
Manual Transmission Fluid:
GL-5 gear oil, SAE 75W-90. Capacity approx. 2.0-2.5 quarts.
Automatic Transmission Fluid:
Subaru ATF HP (Dexron III compatible variants may be used cautiously). Capacity approx. 3.5-4.5 quarts (drain and fill).
NHTSA Crash Test Ratings:
Varies by year and specific test. Generally good for its class, with frontal and side impact ratings often in the 4-star range. Specific ratings should be verified for individual model years.
Active Safety Systems:
Anti-lock Braking System (ABS) standard on most models. Subaru's Vehicle Dynamics Control (VDC) introduced on some later models.
Passive Safety Features:
Front airbags, optional side airbags, front and rear crumple zones, LATCH child seat anchors.
Infotainment System Features:
Basic AM/FM/CD player, optional premium audio systems. Later models might have cassette/CD combos or early forms of MP3 playback. Bluetooth was not standard.
Driver Assistance Features:
Limited driver assistance features typical for the era. Cruise control and ABS were common. Advanced systems like adaptive cruise control or lane keeping assist were not available.
Connectivity Options:
Auxiliary input jacks may be present on some later models. Phone integration was generally via aftermarket Bluetooth kits or wired hands-free setups.
Oil Change Interval:
Typically every 3,750 to 7,500 miles or 6 months, whichever comes first, depending on driving conditions and oil type used (refer to owner's manual).
Timing Belt Replacement:
For EJ25 (SOHC/DOHC) engines, replacement recommended every 105,000 miles or 7 years. EJ20 engines may also have a similar interval. Crucial for preventing catastrophic engine damage.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid. Capacity approx. 0.5-1.0 quart.
Power Steering Fluid:
ATF or specific Subaru power steering fluid. Capacity approx. 0.5-1.0 quart.
Headgasket Failures:
While less prevalent than on some earlier Subaru models, EJ25 SOHC (EJ251/EJ253) engines can be prone to head gasket failures, especially if overheated or subjected to harsh conditions.
Turbocharger Issues Wrx:
WRX models can experience turbocharger failures due to oil starvation, overheating, or improper warm-up/cool-down procedures. Regular oil changes and consideration of an upgraded oil cooler are recommended.
Catalytic Converter Failures:
Premature catalytic converter failure can occur, often indicated by a loss of power or check engine light. Can be linked to engine misfires or oil consumption.
Wheel Bearing Wear:
Front wheel bearings can be susceptible to premature wear, especially on models with performance tires or subjected to rough road conditions.
Subaru Legacy:
Subaru's commitment to All-Wheel Drive and boxer engines, established with models like the Leone and Legacy, carried into the Impreza's development.
Generation Two Overview:
The second generation (GD/GG) introduced a significant styling change and platform update. It also saw the rise of the performance-oriented WRX and the ultimate rally homologation special, the WRX STI, becoming iconic in motorsport.
Manufacturing Locations:
Primarily manufactured in Japan.
Automotive Press Awards:
The WRX and STI variants consistently received accolades from automotive publications for their performance, handling, and rally-inspired driving dynamics.
Performance Handling Ratings:
Praised for its agile handling, precise steering feel, and the confidence-inspiring grip of its AWD system, especially in adverse weather.
Motoring Publications:
Frequently featured in 'best handling' or 'sporty compact' lists by magazines like Car and Driver, MotorTrend, and Road & Track.
