🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Generation Code:

WJ

Model Years Covered:

1999, 2000, 2001, 2002, 2003, 2004

👋 Introduction

Segment:

Mid-size Luxury SUV

Target Audience:

Families, off-road enthusiasts, luxury vehicle buyers

Key Competitors:

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

Powertrain Options:

Robust inline-6 and V8 engines, capable 4WD systems

Off Road Capability:

Renowned Jeep off-road prowess with available Quadra-Drive system

Interior Comfort:

Luxurious appointments for its time, spacious cabin

📋 Manual Details

General Coverage:

Comprehensive service, repair, and maintenance

Estimated Page Count:

2000+

Type:

Factory Service Manual (WSM) / Repair Manual

Language:

English

Format:

Digital (likely PDF, based on industry commonality for this era)

📖 Manual Coverage

Engine:

4.0L (1999-2004), 4.7L V8 (1999-2004), 4.7L HO V8 (2002-2004)

Transmission:

42RE (4-speed automatic), 45RFE/545RFE (4-speed automatic)

Drivetrain:

NV242 (Selec-Trac), NV247 (Quadra-Drive), NV147 (Quadra-Trac I) transfer cases, Dana 30/35 front axles, Dana 44a rear axle

Suspension And Steering:

Front solid axle (early models), independent front suspension (IFS) with coil springs and track bars, rear solid axle with coil springs and track bars, steering gear, power steering system

Brakes:

Front disc (vented), rear disc, ABS, traction control systems

Electrical System:

Battery, charging system, starting system, lighting, instrument cluster, body control modules, infotainment, comfort controls, power accessories

HVAC:

Air conditioning, heating, climate control systems

Body And Chassis:

Body panels, frame, interior trim, glass, doors, liftgate

Exhaust System:

Exhaust manifolds, catalytic converters, mufflers, pipes

Fuel System:

Fuel tank, fuel pump, fuel injectors, fuel pressure regulator

Cooling System:

Radiator, water pump, thermostat, coolant passages

Diagnostics:

Diagnostic trouble codes (DTCs), component testing, troubleshooting flowcharts

Maintenance:

Scheduled maintenance, oil changes, fluid checks and replacements, filter replacements

Repair:

Component removal and installation, adjustments, alignments, component-specific repairs

Overhaul And Rebuild:

Engine overhaul, transmission rebuild, axle servicing

Wiring Diagrams:

Detailed electrical schematics for all systems

Depth:

Detailed specifications, step-by-step repair instructions, torque values, special tool requirements, diagnostic procedures

📊 Manual Specifications

File Type:

PDF (Portable Document Format) - assumed

Searchability:

Likely text-searchable (if properly OCR'd)

Printability:

Printable pages for workshop use

Image Resolution:

High-resolution diagrams and illustrations expected

Binding:

N/A (Digital Format)

Paper Quality:

N/A (Digital Format)

⚙️ Engine Specifications

Engine 1 Variant:

4.0L 'Power Tech' Inline-6

Engine 1 Displacement:

3956 cc (242 cubic inches)

Engine 1 Bore X Stroke:

3.875 x 3.562 inches (96 mm x 90.5 mm)

Engine 1 Compression Ratio:

8.8:1

Engine 1 Horsepower:

185 hp @ 4600 rpm (approx.)

Engine 1 Torque:

235 lb-ft @ 3200 rpm (approx.)

Engine 2 Variant:

4.7L 'Power Tech' V8

Engine 2 Displacement:

4701 cc (287 cubic inches)

Engine 2 Bore X Stroke:

3.70 x 3.35 inches (94 mm x 85 mm)

Engine 2 Compression Ratio:

8.7:1 (standard), 9.7:1 (HO)

Engine 2 Horsepower:

235 hp @ 4750 rpm (standard), 260 hp @ 5200 rpm (HO)

Engine 2 Torque:

325 lb-ft @ 3200 rpm (standard), 325 lb-ft @ 3800 rpm (HO)

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Recommended Fuel:

87 Octane Unleaded (standard 4.7L), 91 Octane Unleaded (recommended for HO 4.7L)

Engine Cooling:

Pressurized liquid cooling system

🔧 Transmission

Standard Transmission:

42RE 4-Speed Automatic (with 4.0L engine)

Optional Transmission 1:

45RFE / 545RFE 4-Speed Automatic (with 4.7L V8 engines)

Transmission Fluid Spec:

ATF+4 (MS-9602) for 45RFE/545RFE; ATF+3 (MS-9224) for 42RE (consult manual for exact specs and potential upgrades)

Transfer Case Options:

Selec-Trac (NV242), Quadra-Trac I (NV147), Quadra-Drive (NV247)

📐 Dimensions

Wheelbase:

116.7 inches (2964 mm)

Length:

186.7 inches (4742 mm)

Width:

73.1 inches (1857 mm)

Height:

65.9 inches (1674 mm)

Ground Clearance:

Approx. 8.5 inches (216 mm)

Curb Weight:

Approx. 4200-4600 lbs (1905-2087 kg) depending on configuration

Towing Capacity:

Up to 5,000 lbs (2268 kg)

🛡️ Safety Features

NHTSA Driver Front Impact:

4/5 Stars (for models tested)

NHTSA Passenger Front Impact:

4/5 Stars (for models tested)

Traction Control:

Available (e.g., Brake Traction Control for Quadra-Trac, Electronic Traction Control for Quadra-Drive)

ABS:

Standard Anti-lock Braking System

Airbags:

Driver and passenger front airbags, optional side airbags

Seatbelts:

3-point front and rear seat belts

💡 Technology Features

Audio System:

Optional Infinity Gold premium audio system with CD player, cassette player, and AM/FM radio

Navigation:

Optional factory navigation system

Cruise Control:

Standard

Parking Assist:

Optional rear parking assist sensors

Power Accessories:

Power windows, power door locks, power mirrors

Remote Keyless Entry:

Available

🔧 Maintenance

Oil Change Interval:

Every 3,000-7,500 miles or 6-12 months (depending on oil type and driving conditions - consult manual)

Engine Coolant Flush:

Every 30,000-100,000 miles or 2-5 years (depending on coolant type - consult manual for specific interval)

Transmission Fluid Change:

Every 30,000-60,000 miles (severe use may require more frequent changes - consult manual)

Engine Oil Type:

API SN/SP, ILSAC GF-6A; SAE 5W-30 recommended for most conditions (4.0L and 4.7L)

Engine Oil Capacity:

4.0L: 5 quarts (4.7L); 4.7L V8: 6 quarts (5.7L)

Coolant Type:

Chrysler HOAT (Hybrid Organic Acid Technology) - e.g., Mopar Antifreeze/Coolant 5 Year/100,000 Mile Formula

Transfer Case Fluid:

Mopar NV247 or equivalent (e.g., Dexron III/Mercon - consult manual for specific transfer case)

Differential Fluid Front:

API GL-5, SAE 80W-90 (or specified viscosity for Quadra-Drive)

Differential Fluid Rear:

API GL-5, SAE 80W-90 (or specified viscosity for Quadra-Drive, potentially with limited slip additive)

Common Complaints Engine 4.0L:

Cracked cylinder heads (less common than earlier generations, but possible), oil filter adapter leaks, thermostat housing leaks

Common Complaints Engine 4.7L:

Cracked cylinder heads (more prevalent, especially early models), valve seat recession, oil sludge buildup if maintenance is neglected, intake manifold leaks

Common Complaints Transmission:

Slipping, harsh shifting, transmission fluid leaks (especially at the cooler lines)

Common Complaints Suspension Steering:

Worn ball joints and tie rod ends, death wobble (especially with aftermarket modifications or worn components on solid axle models), leaky power steering pumps/hoses

Common Complaints Electrical:

Failed HVAC blower motor resistor, interior accessory failures (power windows, seats), PCM/BCM issues

📚 Vehicle History

Brand Focus:

Jeep's legacy in off-road vehicles and rugged capability

Wj Generation Debut:

1999

Wj Generation Redesign:

The WJ was a significant redesign from the previous ZJ Grand Cherokee, featuring a more aerodynamic exterior, a unibody construction with integrated frame rails, and an independent front suspension (IFS) for improved on-road manners.

Wj Generation Updates:

Significant updates included the introduction of the 4.7L V8 engine, the Quadra-Drive system, and minor styling revisions throughout its production run.

Production Location:

Jefferson North Assembly Plant, Detroit, Michigan

🏆 Awards & Recognition

Off Road Awards:

Consistently recognized for off-road capability by automotive publications and off-road enthusiasts.

SUV Of The Year Contender:

Often cited as a strong contender in the SUV segment for its blend of comfort, capability, and luxury features of its era.