2004 Jeep Grand Cherokee WJ Service Shop Manual

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🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Generation: WJ Model Year: 2004 Codes Chassis Code: WJ 👋 Introduction Market Position Vehicle Segment: Mid-size SUV, known for its off-road...

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Description

🏷️ Basic Information

Identification

Make:

Model:

Grand Cherokee

Generation:

Model Year:

Codes

Chassis Code:

👋 Introduction

Market Position

Vehicle Segment:

Mid-size SUV, known for its off-road capabilities and comfortable ride

Competitive Analysis

Key Competitors:

Ford Explorer, Chevrolet TrailBlazer, Toyota 4Runner, Nissan Pathfinder

Key Features

Powertrain Options:

Renowned for its robust inline-6 and powerful V8 engine options, and advanced 4x4 systems

Design Philosophy:

Blends on-road comfort with traditional Jeep off-road prowess

📋 Manual Details

Coverage Areas

Primary Coverage:

Comprehensive service and repair

Secondary Coverage:

Body, Chassis, Electrical, Wiring Diagrams

Page Count

Estimated Page Count:

Extensive, likely over 2000 pages (typical for full workshop manuals of this era)

Manual Type

Manual Classification:

Service Shop Manual / Workshop Manual

Language

Language:

English

Format

Digital Format:

📖 Manual Coverage

Systems Covered

Engine Mechanical:

All aspects of engine assembly, disassembly, overhaul, timing, cooling, lubrication

Engine Performance:

Fuel injection, ignition system, emissions control, diagnostics

Transmission Automatic:

Service and repair of the 45RFE, 545RFE transmissions, including overhaul, torque converter, and valve body

Transmission Manual:

If applicable to specific trims, service and repair of manual gearboxes

Drivetrain 4Wd:

Service and repair of transfer cases (e.g., NV247, NV245, Quadra-Drive II system), front and rear axles, differentials, driveshafts, CV joints

Suspension:

Front and rear suspension systems, steering components, alignment specifications

Brakes:

Hydraulic system, ABS, traction control, parking brake, caliper and rotor service

Electrical System:

Battery, charging system, starting system, lighting, accessories, instrument cluster

Body And Chassis:

Frame, body panels, doors, glass, interior trim, bumpers, underbody protection

HVAC:

Heating, ventilation, air conditioning system service, diagnosis, and repair

Restraint Systems:

Airbag system components, SRS diagnosis, and service precautions

Procedures Included

Preventive Maintenance:

Scheduled maintenance checks, fluid changes, filter replacements

Diagnostic Procedures:

Troubleshooting guides for common symptoms, diagnostic trouble codes (DTCs) and their interpretation

Repair Procedures:

Step-by-step instructions for component removal, installation, and repair

Overhaul Procedures:

Detailed instructions for engine and transmission rebuilds

Wiring Diagrams Detail:

Comprehensive electrical wiring schematics for all systems, including connector pinouts and component locations

Technical Depth

Depth Of Coverage:

Expert level, suitable for professional technicians and advanced DIY enthusiasts

Diagnostic Capabilities:

Includes procedures for using diagnostic scan tools (e.g., DRB III), interpreting sensor data, and performing actuator tests

Special Tools:

Lists and describes necessary special tools for specific repair procedures

📊 Manual Specifications

File Format

Digital Compatibility:

Compatible with Windows, Linux, and Mac operating systems

Searchability:

Fully bookmarked and searchable PDF for quick navigation and information retrieval

Print Quality

Readability:

High resolution, ensuring clarity of text, diagrams, and illustrations

Binding Type

Binding Type:

N/A (Digital PDF format)

Paper Type

Paper Type:

N/A (Digital PDF format)

⚙️ Engine Specifications

Primary Engine

Engine 1 Type:

4.0L Inline-6 (242 ci) OHV PowerTech

Engine 1 Displacement:

3957 cc

Engine 1 Horsepower:

190-205 hp @ 4600-4800 rpm (depending on sub-model year and tuning)

Engine 1 Torque:

235-255 lb-ft @ 3200-3400 rpm (depending on sub-model year and tuning)

Optional Engine

Engine 2 Type:

4.7L V8 (287 ci) Magnum SOHC

Engine 2 Displacement:

4701 cc

Engine 2 Horsepower:

235-260 hp @ 4800-5200 rpm (depending on sub-model year)

Engine 2 Torque:

295-325 lb-ft @ 3200-3600 rpm (depending on sub-model year)

Fuel System

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Recommended Fuel:

87 Octane (for 4.0L), 89 Octane recommended for 4.7L V8 for optimal performance

🔧 Transmission

Standard

Transmission Type Std:

4-speed automatic (45RFE/545RFE)

Optional

Transmission Type Opt:

5-speed automatic (545RFE - introduced later in the WJ generation, likely standard on some 2004 models)

Features

Transfer Case Options:

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

Transmission Fluid Spec:

ATF+4 (MS-9602) for 45RFE/545RFE transmissions

📐 Dimensions

Exterior

Wheelbase:

109.4 inches (2779 mm)

Length:

181.5 inches (4610 mm)

Width:

71.8 inches (1824 mm)

Height:

66.7 inches (1694 mm)

Weights

Curb Weight Est:

4,100 - 4,500 lbs (1860 - 2040 kg), depending on engine and trim

Towing Capacity Est:

Up to 6,500 lbs (2948 kg) with appropriate towing package

Cargo

Cargo Volume Behind 2Nd Row:

Approx. 37.5 cu ft (1062 L)

Cargo Volume Max:

Approx. 71.0 cu ft (2010 L)

🛡️ Safety Features

Ratings

NHTSA Front Impact Driver:

Good (for 2004 models)

NHTSA Front Impact Passenger:

Good (for 2004 models)

IIHS Front Offset:

Acceptable (typical for vehicles of this era tested by IIHS)

Active Features

Standard 4-wheel Anti-lock Braking System (ABS)

Traction Control:

Available on Quadra-Trac II and Quadra-Drive II equipped models

Passive Features

Airbags:

Front airbags (driver and passenger), optional side curtain airbags (depending on trim and options)

💡 Technology Features

Infotainment

Infotainment System:

Optional Infinity Gold premium audio system, CD player, cassette player (early models), optional navigation system

Driver Assistance

Cruise Control:

Standard

Parking Assist:

Optional rear park assist sensors

Connectivity

Connectivity Options:

Auxiliary input for audio (later models), SiriusXM Satellite Radio (optional)

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000-5,000 miles (5,000-8,000 km) or 6 months, depending on driving conditions and oil used

Engine Tune Up Interval:

Spark plugs typically every 100,000 miles for modern ignition systems, but manual will specify

Transmission Fluid Change Interval:

Every 30,000-60,000 miles (48,000-96,000 km) or as per severe service schedule

Coolant Flush Interval:

Every 30,000-50,000 miles (48,000-80,000 km) or 2-3 years

Fluid Specifications

Engine Oil Spec:

SAE 5W-30 for 4.0L, SAE 5W-30 or 10W-30 for 4.7L (refer to owner's manual for specific temps)

Coolant Spec:

Chrysler's HOAT (Hybrid Organic Acid Technology) coolant, typically pink or orange

Brake Fluid Spec:

DOT 3 or DOT 4

Power Steering Fluid Spec:

ATF+4 (MS-9602) or equivalent power steering fluid

Known Issues

Common Issues Engine:

Cracked cylinder heads (4.7L V8), oil filter adapter housing leaks, radiator leaks

Common Issues Transmission:

Slipping, harsh shifting, transmission cooler leaks (especially when connected to radiator)

Common Issues Suspension Steering:

Worn ball joints, tie rods, track bar bushings, death wobble (severe steering shimmy)

Common Issues Electrical:

HVAC blower motor resistor failure, instrument cluster issues, tailgate liftgate actuator failure

Common Issues Other:

Water pump leaks, fuel pump failures, exhaust manifold cracks (4.7L V8)

📚 Vehicle History

Brand Heritage

Brand Legacy:

Jeep, a division of Chrysler (now Stellantis), has a long-standing reputation for robust off-road vehicles

Model Evolution

Wj Generation Years:

1999-2004

Wj Updates 2004:

The 2004 model year represents the final year of the WJ generation, featuring minor updates and refinements

Production

Manufacturing Location:

Toledo, Ohio, USA

🏆 Awards & Recognition

Recognitions

Off Road Capability:

Consistently recognized for its strong off-road performance and capability in its class

Value Proposition:

Often cited as offering good value for a capable SUV, especially on the used market