🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Year:

2002

Platform Code:

WJ

👋 Introduction

Market Segment:

Mid-size Luxury SUV

Key Competitors:

Ford Explorer, Chevrolet TrailBlazer, Toyota 4Runner, Nissan Pathfinder, Land Rover Discovery

Vehicle Strengths:

Off-road capability (Quadra-Drive II available), comfortable ride, spacious interior, available powerful V8 engine

📋 Manual Details

Engine Variants Covered:

4.0L I-6, 4.7L V8

Estimated Page Count:

Approx. 2000+ pages (typical for full factory service manuals of this era)

Type:

Factory Service Repair Manual

Language:

English

Format:

Downloadable Digital File (PDF)

📖 Manual Coverage

Powertrain:

Engine mechanical, engine fuel and exhaust, engine cooling, engine lubrication, ignition system, emission control systems, starting and charging system, transmission (42RE, 45RFE/4545RFE, NV242/NV247 transfer cases)

Chassis:

Brake system (hydraulic, ABS), steering system, suspension system (front and rear), driveline (axles, driveshafts)

Body And Electrical:

Body and frame, interior systems, exterior systems, heating and air conditioning (HVAC), electrical systems (wiring diagrams, components, diagnostics), instrument panel, accessories

Maintenance:

Scheduled maintenance, fluid changes, filter replacements, inspections

Diagnostics And Troubleshooting:

Component testing, diagnostic trouble codes (DTCs), symptom-based troubleshooting guides

Repair And Rebuilding:

Component removal and installation, overhaul procedures, specifications for disassembly and assembly

Depth:

Comprehensive (covering basic maintenance to complete engine and transmission rebuilds, including detailed electrical schematics and diagnostic procedures)

📊 Manual Specifications

File Format:

PDF (Searchable and printable)

Illustration Quality:

High-quality illustrations, diagrams, and schematics

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine 1 Type:

4.0L (3956cc) SOHC 12-valve I6 (PowerTech)

Engine 1 Bore X Stroke:

3.88 in x 3.56 in (98.5 mm x 90.5 mm)

Engine 1 Compression Ratio:

8.8:1

Engine 1 Horsepower:

195 hp @ 4400 rpm

Engine 1 Torque:

230 lb-ft @ 3200 rpm

Engine 2 Type:

4.7L (4701cc) SOHC 16-valve V8 (PowerTech)

Engine 2 Bore X Stroke:

3.72 in x 3.36 in (94.5 mm x 85.5 mm)

Engine 2 Compression Ratio:

9.3:1

Engine 2 Horsepower:

230 hp @ 4700 rpm

Engine 2 Torque:

325 lb-ft @ 3200 rpm

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Recommended Fuel:

87 Octane Unleaded (4.0L), 89 Octane Unleaded Recommended (4.7L)

🔧 Transmission

Transmission Type:

4-speed automatic (42RE with 4.0L)

Transmission Type V8:

4-speed automatic (45RFE/4545RFE with 4.7L V8)

Transfer Case Options:

NV242 Selec-Trac (full-time 4WD), NV247 Quadra-Trac II (full-time 4WD with electronic shifting)

Automatic Transmission Fluid Type:

ATF+4 (Mopar Material Standard MS-9602)

📐 Dimensions

Wheelbase:

116.0 inches (2946 mm)

Length:

189.7 inches (4818 mm)

Width:

74.8 inches (1900 mm)

Height:

72.3 inches (1836 mm)

Curb Weight Min:

4,436 lbs (2012 kg) (4.0L)

Curb Weight Max:

4,756 lbs (2157 kg) (4.7L)

Gross Vehicle Weight Rating Gvwr:

Approx. 5,800 - 6,300 lbs (2630 - 2858 kg) depending on configuration

Cargo Volume Behind 2Nd Row:

33.7 cu ft (954 L)

Cargo Volume With 2Nd Row Folded:

70.5 cu ft (2000 L)

🛡️ Safety Features

NHTSA Frontal Driver Impact:

4 Stars

NHTSA Frontal Passenger Impact:

4 Stars

IIHS Frontal Offset Score:

Good

ABS:

Standard 4-wheel disc brakes with Anti-lock Braking System (ABS)

Traction Control:

Optional (part of some 4WD systems)

Airbags:

Standard front airbags, optional side curtain airbags

💡 Technology Features

Audio System:

Available premium audio systems with CD player, optional navigation system, and steering wheel audio controls on higher trims.

Cruise Control:

Standard electronic cruise control.

Parking Assist:

Rear parking assist system available on some trims.

Trailer Tow Prep:

Trailer tow package often included wiring for trailer lights and brake controllers.

🔧 Maintenance

Oil Change Interval:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first (under normal driving conditions)

Engine Coolant Flush:

Every 30,000 miles (48,000 km) or 2 years

Transmission Fluid Filter Change:

Every 60,000 miles (96,000 km) or 4 years

Engine Oil Type 4 0L:

SAE 10W-30 (API certified) meeting Chrysler MS-6395

Engine Oil Type 4 7L:

SAE 5W-30 (API certified) meeting Chrysler MS-6395

Engine Coolant:

Mopar Antifreeze/Coolant (ethylene glycol base) meeting Chrysler MS-9769

Power Steering Fluid:

ATF+4 (Mopar Material Standard MS-9602)

Brake Fluid:

DOT 3

Cooling System Leaks:

Common issues include cracked plastic coolant reservoir and potential leaks from heater core or radiator seams.

Ignition Coil Failure:

The 4.0L I6 engine's distributorless ignition system can experience individual coil failures, leading to misfires.

Transmission Slippage:

Older automatic transmissions (42RE) can develop slippage if fluid is not maintained or if the valve body is worn.

Power Window Motors:

The regulator and motor assembly for power windows can fail over time.

Death Wobble:

A term often associated with the WJ Grand Cherokee, referring to severe steering wheel shimmy after hitting a bump. Often caused by worn steering/suspension components (track bar, ball joints, tie rod ends).

📚 Vehicle History

Brand Focus:

Jeep has a long-standing heritage in off-road vehicles and SUVs, known for durability and capability.

Previous Generation:

The WJ generation replaced the ZJ Grand Cherokee (1993-1998). It featured a unibody construction and a more refined interior and exterior design.

Features Of Wj:

The WJ introduced a redesigned interior, improved aerodynamics, and optional Quadra-Drive II system, setting it apart from its predecessor.

Production Years Wj:

1999-2004

Manufacturing Location:

Jefferson North Assembly, Detroit, Michigan, USA

🏆 Awards & Recognition

Truck Of The Year:

The WJ Grand Cherokee received positive reviews and was often considered a strong contender in the SUV segment during its production years.

Consumer Reports Rating:

Varied by model year and specific configuration, but generally positioned as a capable and comfortable SUV.