🏷️ Basic Information

Make:

Subaru

Model:

Impreza

Year:

2002

Chassis Code:

GD/GG

👋 Introduction

Segment:

Compact/Economy Sedan and Wagon with AWD focus

Usp:

Standard All-Wheel Drive, rally-inspired heritage, practical design

Competitors:

Honda Civic, Toyota Corolla, Mazda3, Mitsubishi Lancer

Vehicle Attributes:

Symmetrical All-Wheel Drive, boxer engine architecture, robust chassis

Manual Benefits:

Empowers owners and technicians with factory-accurate information for effective maintenance and repair

📋 Manual Details

Primary Coverage:

North America

Market Segment:

All Impreza trims for 2002 model year

Estimated Page Count:

1500-2000

Type:

Factory Service Manual / Workshop Manual

Language:

English

Format:

Printed Book

📖 Manual Coverage

Engine:

2.5L EJ25 SOHC & DOHC (Naturally Aspirated and Turbocharged)

Transmission:

5-Speed Manual (TY754), 4-Speed Automatic (430/430X/430X-A)

Drivetrain:

All-Wheel Drive (AWD) System (Front & Rear Differentials, Center Differential)

Brakes:

Front Ventilated Disc, Rear Solid Disc (ABS & Non-ABS variations)

Suspension:

Front MacPherson Struts, Rear Multi-link Independent

Steering:

Power Rack and Pinion

Electrical:

Full Wiring Diagrams, Lighting, Ignition, Charging, Starting, ECUs, Sensors

Body:

Body Panels, Doors, Windows, Seats, Interior Trim, HVAC System

Cooling System:

Radiator, Hoses, Thermostat, Fans

Fuel System:

Fuel Tank, Pump, Lines, Injectors, Fuel Pressure Regulator

Exhaust System:

Manifolds, Catalytic Converter, Muffler, Pipes

Air Conditioning:

Compressor, Evaporator, Condenser, Refrigerant System

Maintenance:

Oil Changes, Filter Replacements, Spark Plug Service, Fluid Checks/Changes

Troubleshooting:

Diagnostic Flowcharts, Symptom-Based Troubleshooting, DTC Explanations

Repair:

Engine Component Replacement, Transmission Overhaul, Brake Pad/Rotor Replacement, Suspension Bushing Replacement

Diagnostics:

OBD-II Scan Tool Procedures, Sensor Testing, Actuator Testing

Calibration:

Throttle Position Sensor (TPS) Reset, Idle Air Control (IAC) Valve Cleaning/Reset

Installation:

Component Installation Procedures (e.g., alternator, starter, water pump)

Timing:

Engine Timing Belt Replacement and Tensioning (EJ25)

Adjustment:

Parking Brake Adjustment, Clutch Pedal Adjustment

Depth:

Comprehensive: Covers basic maintenance to full engine and transmission rebuilds

Diagnostics Level:

Advanced: Includes detailed sensor data interpretation and troubleshooting trees

Diagrams:

High-quality, detailed diagrams and schematics for all systems

Specifications:

Torque specifications, clearances, fluid capacities, resistance values

📊 Manual Specifications

Digital Format:

N/A (Printed Manual)

Paper Quality:

Durable, high-quality paper suitable for workshop environments

Print Clarity:

Sharp, clear text and diagrams

Binding:

Professional perfect binding or lay-flat binding for ease of use

⚙️ Engine Specifications

Engine Code:

EJ251 (NA SOHC), EJ253 (NA DOHC - rare for 2002 NA), EJ255 (Turbo DOHC - WRX)

Engine Type:

Horizontally Opposed (Boxer) 4-Cylinder

Displacement:

2.5 Liters (2457 cc)

Horsepower Na:

165 hp @ 5600 rpm (EJ251)

Torque Na:

166 lb-ft @ 4000 rpm (EJ251)

Horsepower Turbo Wrx:

227 hp @ 5600 rpm (EJ255)

Torque Turbo Wrx:

217 lb-ft @ 3000 rpm (EJ255)

Fuel Delivery:

Multi-Point Fuel Injection (MPFI)

Fuel Type:

Unleaded Gasoline (87 Octane minimum for NA, 91 Octane recommended for WRX)

Timing Belt:

Yes (Interference Engine)

Coolant Type:

Subaru Blue Coolant (or equivalent ethylene glycol based)

Engine Oil Viscosity:

5W-30 (Recommended for most climates)

🔧 Transmission

Type:

5-Speed Manual (TY754 series)

Type:

4-Speed Automatic (430/430X/430X-A series)

AWD System:

Symmetrical All-Wheel Drive with viscous coupling center differential

Manual Transmission Fluid:

Subaru Extra-S Gear Oil (75W-90 GL-5) or equivalent

Automatic Transmission Fluid:

Subaru ATF-HP (Highly Recommended) or Dexron III/Mercon compatible

📐 Dimensions

Wheelbase:

103.1 inches (2619 mm)

Length:

173.8 inches (4415 mm) - Sedan / 177.4 inches (4505 mm) - Wagon

Width:

68.3 inches (1735 mm)

Height:

56.1 inches (1425 mm) - Sedan / 58.5 inches (1485 mm) - Wagon

Ground Clearance:

5.7 inches (145 mm) - Standard Models / 6.1 inches (155 mm) - Outback Sport

Curb Weight:

Approx. 3000-3300 lbs (1360-1500 kg) depending on trim and transmission

Gross Vehicle Weight Rating:

Refer to vehicle placard (Typically around 4200-4400 lbs)

Cargo Volume Sedan:

12.3 cu ft

Cargo Volume Wagon:

30.3 cu ft (seats up) / 69.3 cu ft (seats down)

🛡️ Safety Features

NHTSA Front Impact:

4/5 Stars (Driver/Passenger)

NHTSA Side Impact:

4/5 Stars (Front/Rear Passenger)

IIHS Frontal Offset:

Good

Braking System:

Anti-lock Braking System (ABS) - Standard on WRX, optional on others

Traction Control:

Not widely available on standard models, focus on AWD grip

Airbags:

Front Driver and Passenger Airbags

Seat Belts:

3-point height-adjustable front seat belts with pretensioners, rear 3-point seat belts

Child Seat Anchors:

LATCH system (Lower Anchors and Tethers for CHildren)

💡 Technology Features

Audio System:

Factory AM/FM/CD player, optional premium audio with subwoofer on higher trims.

Climate Control:

Manual or automatic climate control depending on trim level.

Cruise Control:

Standard on most trims.

Keyless Entry:

Available on select trims.

OBD Ii:

Standard OBD-II port for diagnostic scanning and emissions testing.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles or 6 months (severe service), 7,500 miles or 12 months (normal service) - Check manual for specifics

Timing Belt Replacement:

Every 105,000 miles or 105 months (critical on EJ25 engines)

Spark Plug Replacement:

Every 60,000-105,000 miles depending on plug type (NGK Iridium recommended)

Transmission Fluid Change:

Manual: Every 30,000-60,000 miles. Automatic: Every 30,000-45,000 miles (especially under heavy use)

Brake Fluid:

DOT 3 or DOT 4

Power Steering Fluid:

Subaru Genuine Power Steering Fluid or Dexron III/Mercon compatible ATF

Coolant Capacity:

Approx. 1.6 gallons (6.1 Liters)

Head Gaskets:

While less common on EJ251 compared to older versions, head gasket leaks can still occur, particularly in higher mileage or abused engines. The manual provides specific procedures for diagnosis and replacement.

Rear Main Seal:

Can develop leaks over time, requiring transmission removal for replacement.

Subaru Clunk:

A common symptom of worn rear differential mounting bushings or other suspension components. The manual will detail inspection and replacement of these parts.

Oil Consumption:

Some EJ25 engines may consume oil between changes; regular monitoring is advised. The manual details oil system checks.

📚 Vehicle History

Subaru Legacy:

The Impreza shares its platform and AWD technology with the larger Subaru Legacy.

Second Generation:

The 2002 model marks the beginning of the second generation (GD/GG chassis), featuring a significant redesign from the first generation.

Performance Variants:

Introduction of the WRX model to North America for the 2002 model year, bringing turbocharged performance and rally heritage.

Manufacturing Location:

Japan (Various Subaru plants)

🏆 Awards & Recognition

IIHS Top Safety Pick:

While specific year awards vary, the Impreza consistently received good ratings from the IIHS for its safety structure.

Car And Driver 10Best:

The WRX variant was often lauded by automotive publications for its performance and value.