🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Platform:

WJ

Year:

2004

Generation:

Second Generation (WJ)

Chassis Code:

WJ

👋 Introduction

Market Position:

The Jeep Grand Cherokee WJ (1999-2004) occupied a strong segment of the mid-size luxury SUV market, known for its off-road capability blended with a comfortable on-road experience. This manual positions itself as the definitive resource for owners and technicians seeking accurate, factory-level repair and maintenance information for this highly capable vehicle.

Competitive Analysis:

Competed directly with vehicles like the Ford Explorer, Toyota 4Runner, Nissan Pathfinder, and Chevrolet TrailBlazer. The Grand Cherokee WJ stood out with its refined interior (especially in Limited and Overland trims), powerful engine options, and superior off-road prowess compared to many competitors in its class, particularly with the Quadra-Drive system.

Key Features:

This manual is a crucial asset for maintaining the Jeep Grand Cherokee WJ's legendary performance. It offers unparalleled detail on its robust powertrain options, sophisticated four-wheel-drive systems, and comfortable interior appointments. The inclusion of both LHD and RHD variants ensures broad applicability.

📋 Manual Details

Coverage Areas:

Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Body, Interior, Emissions, Diagnostics, Troubleshooting, Maintenance, Repair Procedures

Page Count:

2333

Manual Type:

Complete Official Factory Service / Repair / Workshop Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Systems Covered:

Engine mechanical and electrical, 42RE/45RFE/545RFE automatic transmissions, NP242/NP247/Quadra-Drive transfer cases, front and rear axles (Dana 30/44), braking system (ABS, rotors, pads, lines), steering system (power steering pump, rack and pinion), suspension system (front solid axle, rear solid axle, coil springs, control arms, shock absorbers, sway bars), climate control (HVAC, A/C system, heater core), fuel system (pump, injectors, tank), exhaust system (catalytic converter, mufflers, pipes), cooling system (radiator, fan, thermostat, coolant), electrical system (wiring diagrams, fuses, relays, lighting, power windows, power locks, starting system, charging system), body and interior (trim, seats, dashboard, airbags, door mechanisms), safety systems (airbags, seatbelts), emissions control systems

Procedures Included:

Routine maintenance (oil changes, fluid checks, filter replacements), scheduled maintenance, component removal and installation, diagnostic procedures, troubleshooting common issues, electrical system diagnosis using wiring diagrams, engine repair (cylinder head, pistons, crankshaft), transmission service and repair, brake service (pad/rotor replacement, bleeding), suspension component replacement, HVAC system servicing, body panel repair, interior component repair, emissions system troubleshooting, torque specifications for all fasteners, specialized tool usage, diagnostic trouble code (DTC) interpretation and resolution

Technical Depth:

Comprehensive. Covers everything from basic maintenance tasks and fluid changes to complete engine and transmission rebuilds, complex electrical diagnostics, and advanced suspension and drivetrain repairs. Includes detailed disassembly, assembly, and adjustment procedures with accompanying diagrams and illustrations.

📊 Manual Specifications

File Format:

PDF

Print Quality:

Excellent Factory Quality

Binding Type:

Digital Download (PDF)

Paper Type:

Not Applicable (Digital)

File Size:

86.7 MB

Features:

Searchable text, zoom in/out capability, instant download

⚙️ Engine Specifications

Primary Engine:

4.0L Inline-6 "Power Tech" Gasoline

Secondary Engine:

4.7L V8 "Magnum" Gasoline

Tertiary Engine:

4.7L V8 High Output "Magnum" Gasoline

4.0L I6 Horsepower:

190 hp @ 4450 rpm (approx.)

4.0L I6 Torque:

235 lb-ft @ 3250 rpm (approx.)

4.7L V8 Horsepower:

235 hp @ 4500 rpm (approx.)

4.7L V8 Torque:

295 lb-ft @ 3200 rpm (approx.)

4.7L Ho V8 Horsepower:

257 hp @ 5200 rpm (approx.)

4.7L Ho V8 Torque:

325 lb-ft @ 3600 rpm (approx.)

Fuel System:

Sequential Multi-Port Fuel Injection (MPI)

Engine Management:

Distributorless Ignition System (DIS) with Crankshaft Position Sensor for 4.0L; Distributorless Ignition System (DIS) with Coil-on-Plug (COP) for 4.7L V8

🔧 Transmission

Standard Transmission:

4-speed automatic (42RE for 4.0L, 45RFE for 4.7L)

Optional Transmission:

5-speed automatic (545RFE for 4.7L HO)

Transfer Case Options:

Selec-Trac (NV242), Quadra-Trac II (NV247), Quadra-Drive (NV247 with Vari-Lok axles)

Transmission Fluid Type:

ATF+4 (Mopar specifications)

📐 Dimensions

Wheelbase:

116.1 inches (2950 mm)

Length:

181.6 inches (4613 mm)

Width:

74.0 inches (1880 mm)

Height:

67.0 inches (1702 mm)

Curb Weight:

4,200 - 4,700 lbs (approx.)

Cargo Volume Behind 2Nd Row:

30.5 cu ft (approx.)

Cargo Volume With 2Nd Row Folded:

67.0 cu ft (approx.)

🛡️ Safety Features

NHTSA Rollover Resistance:

4/5 Stars (Varies by configuration)

Active Safety Features:

Four-wheel Anti-lock Braking System (ABS), Traction Control System (TCS), optional Electronic Stability Program (ESP - introduced later in the WJ generation but often found on '04 models)

Passive Safety Features:

Driver and front passenger airbags, front and rear crumple zones, side impact protection beams, optional side curtain airbags

💡 Technology Features

Infotainment System:

Optional premium sound systems with CD player, cassette player, and amplified speakers. Optional navigation system available on some trims. Basic AM/FM radio with auxiliary inputs.

Driver Assistance Features:

Cruise control, rear parking assist sensors (optional on some trims)

Connectivity Features:

N/A (Limited connectivity by modern standards; some may have aftermarket Bluetooth modules)

🔧 Maintenance

Oil Change Interval:

Every 3,000-5,000 miles or 6 months, depending on driving conditions and oil type (refer to manual for specific recommendations).

Transmission Fluid Change Interval:

Every 30,000-60,000 miles or 3-5 years (refer to manual for specific recommendations and fluid type).

Coolant Flush Interval:

Every 30,000 miles or 2 years (using specified coolant).

Engine Oil Specification:

API SN or higher, SAE 5W-30 (check owner's manual for specific viscosity and certification)

Coolant Specification:

Chrysler HOAT (Hybrid Organic Additive Technology) coolant, typically blue or green in color

Brake Fluid Specification:

DOT 3

Common Issues:

Cracked cylinder heads (especially early 4.7L models), transfer case chain stretch, radiator leaks, water pump failure, death wobble (steering shimmy on solid front axle), PCM failure, O2 sensor issues, minor interior trim wear, exhaust manifold cracks (on some 4.7L engines).

📚 Vehicle History

Brand Heritage:

Jeep, a division of Chrysler (later Fiat Chrysler Automobiles), has a long-standing reputation for producing capable off-road vehicles. The Grand Cherokee lineage, introduced in 1993, aimed to combine Jeep's ruggedness with luxury and comfort.

Model Evolution:

The WJ generation (1999-2004) represented a significant redesign from the previous ZJ. It featured a more unified body-on-frame construction (though often referred to as unibody or integrated body-frame by some), improved interior quality, and new powertrain options. It was known for its comfortable ride and advanced four-wheel-drive systems.

Production Years:

1999-2004

Assembly Locations:

Jefferson North Assembly Plant, Detroit, Michigan, USA

🏆 Awards & Recognition

Recognitions:

While specific awards for the 2004 model year are less documented, the Grand Cherokee consistently received praise for its V8 engine performance and off-road capability from automotive publications during its production run. Its blend of luxury and ruggedness positioned it favorably within the SUV segment.