🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Generation Code:

WG

Year:

2002

Chassis Code:

WG

👋 Introduction

Positioning:

The Jeep Grand Cherokee WG positioned itself as a premium mid-size SUV, offering a blend of on-road comfort, off-road capability, and luxury amenities.

Competitors:

Competed against vehicles like the Ford Explorer, Chevrolet TrailBlazer, Toyota 4Runner, and Nissan Pathfinder.

Features:

Renowned for its comfortable ride, refined interior, robust 4x4 systems (Quadra-Drive II), and strong towing capacity.

Purpose:

To provide comprehensive repair and maintenance information for technicians and DIY enthusiasts working on the 2002 Jeep Grand Cherokee WG.

Value Proposition:

Offers significant cost savings on repairs and maintenance by empowering owners to perform tasks themselves or understand complex issues.

📋 Manual Details

Product Name:

Jeep Grand Cherokee WG 2002 Workshop Service Repair Manual PDF

Primary Coverage:

2002 Jeep Grand Cherokee (WG Series)

Total Pages:

4475

Type:

Workshop Service Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine Mechanical:

Complete engine overhaul, component testing, timing, lubrication, cooling system

Engine Control:

EFI, ignition, sensors, actuators, PCM diagnostics, emissions control

Transmission:

Automatic and Manual transmission overhaul, diagnostics, fluid service, shift controls

Drivetrain:

4x4 system, transfer case, differentials, axles, driveshafts, CV joints

Suspension:

Front and rear suspension, springs, shocks, control arms, ball joints, bushings, steering linkage

Brakes:

ABS, brake system hydraulics, calipers, rotors, pads, parking brake, bleeding procedures

Steering:

Power steering system, steering column, tie rods, drag link, alignment specifications

Electrical System:

Battery, charging system, starting system, lighting, horn, wipers, power accessories

Body And Chassis:

Body panels, doors, windows, interior trim, frame, unibody construction, glass replacement

HVAC:

Air conditioning, heating, ventilation, climate control system, components, refrigerant

Body Electrical:

Power windows, locks, mirrors, sunroof, remote keyless entry, alarm system

Diagnostics:

OBD-II troubleshooting, DTC codes, diagnostic flowcharts, component testing

Safety Systems:

Airbags, seat belts, SRS system diagnostics

Maintenance:

Scheduled maintenance, fluid changes, filter replacements, lubrication points

Repair:

Step-by-step repair instructions for all major systems

Troubleshooting:

Diagnostic procedures and solutions for common problems

Rebuild:

Complete overhaul procedures for engines, transmissions, and differentials

Installation:

Installation procedures for replacement parts and accessories

Specifications:

Torque specifications, clearances, adjustments, diagnostic parameters

Wiring Diagrams:

Detailed electrical wiring schematics for all vehicle systems

Depth:

Comprehensive from basic maintenance to complete engine/transmission rebuilds and advanced diagnostics

📊 Manual Specifications

File Type:

PDF

Searchable Text:

Yes (typical for high-quality PDF manuals)

Printability:

Printable (allows users to print specific sections or the entire manual)

Binding:

N/A (Digital PDF format)

Paper Quality:

N/A (Digital PDF format)

⚙️ Engine Specifications

Engine Code Options:

Possible engines include 4.0L I6 (e.g., AMC 242), 4.7L V8 (e.g., PowerTech)

Displacement 4.0L:

3952 cc (242 cubic inches)

Horsepower 4.0L:

Approximately 190-200 hp @ 4200-4600 rpm (typical for this engine)

Torque 4.0L:

Approximately 235-250 lb-ft @ 3000-3200 rpm (typical for this engine)

Displacement 4.7L:

4701 cc (287 cubic inches)

Horsepower 4.7L:

Approximately 230-235 hp @ 4500-4700 rpm

Torque 4.7L:

Approximately 295-300 lb-ft @ 3200-3500 rpm

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded gasoline

Engine Management:

PCM (Powertrain Control Module) with electronic ignition and fuel control

🔧 Transmission

Transmission Type Std:

Likely 4-speed automatic (e.g., 42RE or 45RFE for V8, possibly NV3500 for manual on some trims)

Transmission Type Opt:

Possible 5-speed manual transmission for certain engine configurations.

4X4 System:

Quadra-Trac II or Quadra-Drive II full-time 4WD systems with varying degrees of traction control and locking differentials.

Atf Type 42Re/45Rfe:

Chrysler ATF+4 (MS-9602)

📐 Dimensions

Wheelbase:

Approximately 116.1 inches (2950 mm)

Length:

Approximately 183.7 inches (4666 mm)

Width:

Approximately 73.0 inches (1854 mm)

Height:

Approximately 67.5 inches (1715 mm)

Curb Weight:

Varies by engine and configuration, typically 4,200 - 4,600 lbs

Towing Capacity:

Up to 5,000 lbs (when properly equipped with towing package)

🛡️ Safety Features

NHTSA Front Impact Driver:

4-star rating (as per NHTSA for 2002 models)

NHTSA Front Impact Passenger:

4-star rating (as per NHTSA for 2002 models)

NHTSA Side Impact Front Driver:

4-star rating (as per NHTSA for 2002 models)

NHTSA Side Impact Front Passenger:

4-star rating (as per NHTSA for 2002 models)

IIHS Front Crash Rating:

Good (as per IIHS for 2002 models)

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Available Traction Control System (TCS)

Airbags Front:

Frontal airbags for driver and front passenger

Airbags Side:

Optional front and rear side-curtain airbags (availability varies by trim)

Seatbelts:

Three-point seat belts with pretensioners for front occupants, three-point belts for rear occupants

💡 Technology Features

Audio System:

Factory AM/FM/CD player with optional Infinity sound system. Cassette player may be present.

Navigation:

Optional factory navigation system available on higher trims.

Cruise Control:

Standard electronic cruise control.

Remote Keyless Entry:

Available remote keyless entry system.

Power Seats:

Optional power adjustable driver and passenger seats.

🔧 Maintenance

Oil Change Interval:

Typically 3,000-7,500 miles (10W-30 or 5W-30 synthetic blend recommended, consult manual for specifics).

Engine Air Filter Replacement:

Every 15,000-30,000 miles or as needed based on driving conditions.

Transmission Fluid Change:

Every 30,000-60,000 miles for automatic transmissions, depending on usage.

Spark Plug Replacement:

Platinum-tipped plugs often have intervals of 60,000-100,000 miles. Consult manual for specific type.

Engine Oil Capacity 4.0L:

Approximately 6 quarts (5.7 liters) with filter.

Engine Oil Capacity 4.7L:

Approximately 7 quarts (6.6 liters) with filter.

Coolant Type:

HOAT (Hybrid Organic Acid Technology) coolant, typically Mopar OAT or equivalent (e.g., Peak Final Charge Global Lifetime).

Common Problems:

Radiator leaks, water pump failures, heater core issues, exhaust manifold cracks (especially on 4.0L), transmission solenoid failures, rear main seal leaks, suspension component wear (ball joints, control arm bushings).

Electrical Issues:

Window regulator failures, interior light issues, CAN bus communication problems (less common on 2002, but possible).

Engine 4.0L Specific:

Cracked cylinder heads (less prevalent in later years of this engine but possible), oil filter adapter seal leaks.

Engine 4.7L Specific:

Valve seat recession, camshaft position sensor issues, plenum gasket leaks.

📚 Vehicle History

Brand Origins:

Jeep, a division of Chrysler (then part of DaimlerChrysler), has a long-standing heritage in off-road vehicles.

Grand Cherokee Genesis:

The Grand Cherokee was introduced in 1993 as a more luxurious and comfortable SUV than the Cherokee XJ.

Second Generation Introduction:

The WG generation (second generation) debuted for the 1999 model year, bringing a significant redesign.

Production Location:

Primarily manufactured in Detroit, Michigan, USA.

Model Year Range:

The WG generation was produced from 1999 through 2004.

🏆 Awards & Recognition

Segment Recognition:

Consistently ranked as a strong contender in the mid-size SUV segment for its combination of luxury and capability.

Kbb Ratings:

Generally received favorable ratings from automotive publications for its ride comfort and off-road prowess.

Product Quality:

The manual adheres to industry standards for automotive service documentation, providing accurate and detailed technical information.