🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Year:

2002

Chassis Code:

WG

Common Engine Code:

4.7L V8 (EAK, EAZ), 4.0L I6 (ERH)

👋 Introduction

Vehicle Segment:

Mid-size SUV

Key Competitors 2002:

Ford Explorer, Chevrolet Blazer/TrailBlazer, Toyota 4Runner, Nissan Pathfinder, Mitsubishi Montero Sport

Vehicle Platform:

WG platform (shared with Mercedes-Benz ML-Class W163)

Drivetrain Options:

2WD and 4WD (Quadra-Trac II, Quadra-Drive)

Target Demographic:

Families, adventurers, those seeking towing capability and off-road prowess

📋 Manual Details

Primary Markets Covered:

North America, Europe, Australia (WG platform specifics)

Estimated Page Count:

1500+

Type:

Comprehensive Service and Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine Systems:

Engine mechanical, fuel system, ignition system, lubrication system, cooling system, exhaust system, emissions control

Transmission Drivetrain:

Automatic Transmission (45RFE/545RFE), Manual Transmission (NV3500 - if equipped), Transfer Case (NV247, NV244), Drive Axles (Front and Rear)

Chassis Suspension Steering:

Front Suspension (Solid Axle with Coil Springs), Rear Suspension (Multi-link Solid Axle), Steering System (Power Assisted Rack and Pinion/Recirculating Ball), Brakes (Front Disc, Rear Disc, ABS)

Electrical Electronics:

Battery, Charging System, Starting System, Lighting, Instrumentation, Body Control Modules (BCM), Powertrain Control Module (PCM), Anti-lock Braking System (ABS), Airbag System (SRS), Power Accessories (Windows, Locks, Seats), HVAC Controls

Body Exterior Interior:

Body Panels, Doors, Hood, Tailgate, Bumpers, Glass, Seats, Upholstery, Trim, HVAC System (Ducting, Controls)

Maintenance Procedures:

Oil change, filter replacement, fluid checks and changes, tune-ups, brake service, tire rotation, battery maintenance

Repair Procedures:

Engine component replacement (alternator, starter, water pump, etc.), transmission service and overhaul, brake caliper and rotor replacement, suspension and steering component replacement, electrical component diagnosis and replacement, body panel repair

Troubleshooting Diagnostics:

Diagnostic Trouble Codes (DTCs), symptom-based troubleshooting, wiring diagrams, component testing procedures

Special Tools Techniques:

Required special tools for specific repairs, torque specifications, assembly/disassembly sequences

Depth Of Coverage:

Complete, from basic scheduled maintenance to in-depth engine and transmission overhauls, electrical system diagnostics, and body repair.

📊 Manual Specifications

File Type:

Searchable PDF

Image Resolution:

High-resolution for clear exploded views and diagrams

Binding:

N/A (Digital)

Paper Quality:

N/A (Digital)

⚙️ Engine Specifications

Engine 1 Configuration:

4.0L Inline-6 (PowerTech)

Engine 1 Displacement:

3952 cc (241 ci)

Engine 1 Horsepower:

190 hp @ 4600 rpm

Engine 1 Torque:

235 lb-ft @ 3000 rpm

Engine 2 Configuration:

4.7L V8 (Magnum)

Engine 2 Displacement:

4701 cc (287 ci)

Engine 2 Horsepower:

235 hp @ 4750 rpm

Engine 2 Torque:

305 lb-ft @ 3250 rpm

Valve Train:

SOHC (4.0L I6), SOHC 2 valves per cylinder (4.7L V8)

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Recommended Fuel:

87 Octane Unleaded (4.0L I6), 89 Octane Unleaded Recommended (4.7L V8)

🔧 Transmission

Standard Transmission Type:

4-speed Automatic (45RFE/545RFE)

Optional Transmission Type:

5-speed Manual (NV3500 - less common in WG)

Transfer Case Options:

NV247 (Full-time 4WD, Selec-Trac), NV244 (Part-time 4WD, Command-Trac - less common in WG)

4Wd Systems:

Quadra-Trac II (available with electronic transfer case), Quadra-Drive (includes electronic transfer case and front/rear electronic locking differentials)

Transmission Fluid Spec:

ATF+4 (Mopar)

📐 Dimensions

Wheelbase:

111.0 inches (2819 mm)

Length:

183.7 inches (4666 mm)

Width:

71.6 inches (1819 mm)

Height:

68.0 inches (1727 mm)

Curb Weight Min:

4218 lbs (1913 kg)

Curb Weight Max:

4674 lbs (2120 kg)

Towing Capacity:

Up to 6,500 lbs (2948 kg) with optional tow package

Cargo Volume Behind 2Nd Row:

33.7 cu ft (954 L)

Cargo Volume Max:

78.1 cu ft (2211 L)

🛡️ Safety Features

NHTSA Front Impact Driver:

4/5 Stars

NHTSA Front Impact Passenger:

4/5 Stars

NHTSA Side Impact Front Driver:

4/5 Stars

NHTSA Side Impact Front Passenger:

4/5 Stars

NHTSA Rollover Resistance:

4/5 Stars (estimated)

ABS:

Standard

Traction Control:

Available (part of 4WD systems)

Airbags:

Driver and front passenger airbags, available side curtain airbags

Seatbelts:

3-point front and rear seatbelts

💡 Technology Features

Audio Options:

Standard AM/FM stereo with CD player, optional Infinity Gold premium audio system, optional cassette player.

Navigation:

Optional GPS navigation system (early generation).

ABS System:

Standard Anti-lock Braking System (ABS)

Traction Control Availability:

Available as part of the Quadra-Drive system.

Auxiliary Input:

No standard auxiliary input; aftermarket solutions may be available.

🔧 Maintenance

Oil Change Interval:

Every 3,000-7,500 miles or 6 months, depending on driving conditions and oil type (refer to manual for specifics).

Air Filter Replacement Interval:

Every 15,000-30,000 miles or 2 years.

Coolant Flush Interval:

Every 30,000 miles or 3 years.

Transmission Fluid Change Interval:

Every 30,000-60,000 miles or 3-5 years, depending on driving conditions.

Engine Oil Type:

SAE 5W-30 Synthetic Blend or Full Synthetic (API Certified)

Engine Oil Capacity 4.0L:

6 US quarts (5.7 liters)

Engine Oil Capacity 4.7L:

7 US quarts (6.6 liters)

Coolant Type:

Mopar OAT (Orange) Antifreeze/Coolant 10 Year/100,000 Mile Formula (or equivalent)

Brake Fluid Type:

DOT 3

Common Issues 2002 Wj:

Head gasket leaks (especially 4.7L V8), rear main seal leaks, transmission valve body issues (45RFE/545RFE), rust in critical areas (frame, rocker panels), cooling fan clutch failure, power steering pump whine, ignition coil failure, transfer case pump seal leaks (NV247).

📚 Vehicle History

Jeep Legacy:

Founded on off-road capability and ruggedness, established in WWII with the Willys MB.

Grand Cherokee Genesis:

First introduced in 1993 as a more luxurious and comfortable alternative to the Cherokee (XJ).

Second Generation Zj To Wj:

The WG represents the second generation (1999-2004), featuring a significant redesign and sharing some components with Mercedes-Benz.

Wg Specifics:

Launched in late 1998 for the 1999 model year, the WG received minor updates for 2002, including revised interior trim and improved NV247 transfer case operation.

Manufacturing Locations:

Jefferson North Assembly, Detroit, Michigan, USA

🏆 Awards & Recognition

Popular Mechanics Editor Choice Award:

Awarded 'Best of the Best' in the SUV category by Popular Mechanics for the second-generation Grand Cherokee (including 2002 model).