🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Chassis Code:

WJ

Model Years Covered:

1999-2004

Trim Levels Covered:

All Models (Laredo, Limited, Overland, Special Editions)

👋 Introduction

Vehicle Segment:

Mid-size Luxury SUV

Target Audience:

Families, Outdoor Enthusiasts, Consumers seeking a capable and comfortable SUV

Key Competitors:

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

Vehicle Strengths:

Renowned Off-Road Capability (Quadra-Drive II), Comfortable Ride, Spacious Interior, Powerful Engine Options, Luxurious Appointments (Limited/Overland trims)

Manual Value Proposition:

Provides comprehensive, factory-accurate repair and maintenance information for the entire WJ generation, enabling owners and technicians to perform all necessary service and repairs.

📋 Manual Details

Engine Options:

4.0L I6 (PowerTech), 4.7L V8 (PowerTech)

Transmission Options:

42RE Automatic (4.0L), 45RFE/545RFE Automatic (4.7L)

Drivetrain Options:

2WD (Select Models), 4WD (Quadra-Trac II, Quadra-Drive)

Estimated Page Count:

2000+ (typical for comprehensive FSMs of this era)

Type:

Factory Service Manual (FSM) / Workshop Repair Manual

Language:

English

Digital Format:

PDF

Features:

Searchable Text, Bookmarks

📖 Manual Coverage

Powertrain:

Engine (4.0L I6, 4.7L V8), Fuel System, Exhaust System, Cooling System, Ignition System, Starting System, Charging System, Transmission (42RE, 45RFE/545RFE), Transfer Case (NV231, NV242, NV247), Drivelines, Differentials (Front, Rear)

Chassis:

Suspension (Front - Solid Axle/Live Axle, Rear - Multi-Link), Steering System, Brake System (Front Disc, Rear Disc), Anti-lock Braking System (ABS), Traction Control System (TCS), Wheel Bearing/Hubs

Electrical:

Body Control Module (BCM), Powertrain Control Module (PCM), Instrument Cluster, Lighting (Interior/Exterior), HVAC Controls, Power Accessories (Windows, Locks, Seats, Mirrors), Audio System, Security System (Sentry Key Immobilizer), Diagnostic Trouble Codes (DTCs)

Body And Trim:

Body Panels, Doors, Hood, Liftgate, Bumpers, Glass, Seats, Interior Trim, Exterior Trim, Roof Rack Systems

Routine Maintenance:

Oil and Filter Change, Air Filter Replacement, Spark Plug Replacement, Coolant Flush, Brake Fluid Flush, Differential Fluid Change, Transfer Case Fluid Change, Transmission Fluid Change, Lubrication Points

Diagnostics And Troubleshooting:

Engine Performance Issues, Transmission Shifting Problems, Electrical System Faults, HVAC Malfunctions, Drivetrain Noises, Brake Performance Issues, Suspension Alignment Problems

Repair And Rebuild:

Engine Component Replacement (e.g., Head Gaskets, Pistons, Valves), Transmission Overhaul, Suspension Component Replacement (e.g., Shocks, Struts, Ball Joints, Bushings), Brake System Component Replacement (e.g., Rotors, Calipers, Lines), Steering Component Replacement (e.g., Tie Rods, Steering Gear), Electrical Component Replacement (e.g., Alternator, Starter, PCM, BCM), Body Panel Repair and Replacement

Technical Specifications:

Torque Specifications, Fluid Capacities, Lubricant Types, Belt Routing Diagrams, Wiring Diagrams, Vacuum Diagrams, Component Identification, Diagnostic Charts

Depth:

Comprehensive (Factory Level), Suitable for Professional Technicians and Advanced DIY Enthusiasts

📊 Manual Specifications

File Type:

PDF (Optimized for Search and Navigation)

Image Resolution:

High Resolution (Clear Diagrams and Text)

Readability:

Excellent (Designed for on-screen viewing and selective printing)

Digital Binding:

N/A (Digital Download)

Digital Paper Simulation:

N/A (Digital Download)

⚙️ Engine Specifications

Engine 1 Name:

PowerTech 4.0L I6

Engine 1 Displacement:

3952 cc (241 cu in)

Engine 1 Configuration:

Inline 6-Cylinder, Overhead Valve (OHV)

Engine 1 Horsepower:

185 hp @ 4600 rpm (approx.)

Engine 1 Torque:

235 lb-ft @ 3200 rpm (approx.)

Engine 2 Name:

PowerTech 4.7L V8

Engine 2 Displacement:

4701 cc (287 cu in)

Engine 2 Configuration:

V-8, Single Overhead Cam (SOHC), 16 Valves

Engine 2 Horsepower:

220-235 hp @ 4700-5200 rpm (varies by year/tune)

Engine 2 Torque:

285-325 lb-ft @ 3200-3500 rpm (varies by year/tune)

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline

Ignition System:

Distributorless Ignition System (DIS) with Coil-on-Plug (COP) for 4.7L V8 (later years), Distributor with Coil Pack for 4.0L I6

🔧 Transmission

Standard Type:

4-Speed Automatic Transmission

Standard Model 4 0L:

42RE

Optional Type:

4-Speed Automatic Transmission

Optional Model 4 7L:

45RFE / 545RFE (later models)

Overdrive:

Yes (4th Gear)

Transfer Case Options:

NV231 HD (4WD), NV242 (4WD Selec-Trac), NV247 (4WD Quadra-Trac II), NV247 (4WD Quadra-Drive)

Fluid Type 42Re:

ATF+3 (Mopar) or equivalent

Fluid Type 45Rfe 545Rfe:

ATF+4 (Mopar) or equivalent

📐 Dimensions

Wheelbase:

116.0 inches (2946 mm)

Length:

186.0 inches (4724 mm)

Width:

74.8 inches (1899 mm)

Height:

70.7 inches (1796 mm)

Ground Clearance:

8.7 inches (221 mm) (approx., varies with tire size)

Curb Weight:

4400 - 4800 lbs (approx., varies with configuration)

Towing Capacity:

Up to 6,500 lbs (when properly equipped with towing package)

🛡️ Safety Features

NHTSA Rollover Rating:

4/5 Stars (for 2WD and 4WD models)

ABS:

Standard (Anti-lock Braking System)

Traction Control:

Standard (Traction Control System - TCS)

All Wheel Drive:

Optional (Quadra-Trac II, Quadra-Drive)

Airbags:

Driver and Passenger Front Airbags (Standard), Optional Side Impact Airbags

Seat Belts:

Three-point seat belts for all occupants, pretensioners for front seats

💡 Technology Features

Audio System:

AM/FM Stereo with CD Player (single or 10-disc changer), optional premium audio systems (Infinity)

Navigation:

Optional factory navigation system available on higher trim levels

Cruise Control:

Standard

Parking Assistance:

Rear parking assist sensors available on some models

Onboard Diagnostics:

OBD-II compliant for engine and emissions diagnostics

🔧 Maintenance

Oil Change Interval:

Every 5,000 - 7,500 miles or 6 months, whichever comes first (depending on driving conditions and oil type used, consult manual for specifics)

Engine Air Filter:

Inspect every 15,000 miles, replace as needed or every 30,000 miles

Spark Plugs:

4.0L I6: Approx. 100,000 miles (Long Life Platinum), 4.7L V8: Approx. 100,000 miles (Long Life Platinum)

Coolant Flush:

Every 30,000 miles or 2 years (Mopar Antifreeze/Coolant 10 Year/100,000 Mile Formula or equivalent HOAT)

Engine Oil Type:

SAE 5W-30 (API Certified for gasoline engines)

Engine Oil Capacity 4 0L:

5.0 US quarts (4.7 L) with filter

Engine Oil Capacity 4 7L:

6.0 US quarts (5.7 L) with filter

Brake Fluid Type:

DOT 3

Power Steering Fluid:

Mopar Power Steering Fluid or equivalent ATF+3

Common Problems Powertrain:

Head gasket leaks (especially 4.7L V8), Radiator leaks/overheating, Transmission solenoid issues (42RE), Transfer case chain stretch/wear, Cracked exhaust manifolds (4.0L I6)

Common Problems Chassis Suspension:

Worn front axle U-joints, worn control arm bushings, leaking steering gear, premature wear of steering components, sagging headliner

Common Problems Electrical:

Window regulator failure, climate control module failure, Sentry Key immobilizer issues, LCM (Lighting Control Module) failures, instrument cluster problems

📚 Vehicle History

Jeep Legacy:

Jeep has a storied history of producing rugged, capable off-road vehicles, dating back to its military origins in WWII.

Wj Generation:

The WJ Grand Cherokee, launched for the 1999 model year, represented a significant redesign from its predecessor (ZJ). It featured a more refined interior, improved aerodynamics, and more advanced powertrain and chassis options, positioning it as a more luxurious and comfortable SUV.

Major Updates Wj:

Minor styling updates and powertrain enhancements occurred throughout the WJ's lifecycle, including the introduction of the more advanced 4.7L High Output V8 in later years and the improved 545RFE transmission.

Manufacturing Location:

Detroit, Michigan, USA

Production Period:

1999 - 2004

🏆 Awards & Recognition

Automotive Press:

The WJ Grand Cherokee was generally well-received by automotive press for its blend of luxury, capability, and comfort, often praised for its off-road prowess and upscale interior compared to competitors.

Consumer Reports:

Varied over the years; initial models often received good ratings, but some reliability concerns emerged in later years, particularly with the 4.7L V8 and early transmissions. The manual helps address and resolve many of these potential issues.