🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Year:

2004

Chassis Code:

WJ

Service Manual Code:

Likely internal code, not explicitly provided in product info

👋 Introduction

Market Position:

The Jeep Grand Cherokee WJ (1999-2004) was a significant player in the mid-size luxury SUV segment, known for its off-road capability blended with on-road comfort. This 2004 model represents the final year of this generation.

Competitors:

Competed against vehicles like the Ford Explorer, Chevrolet Blazer, Toyota 4Runner, Nissan Pathfinder, and Land Rover Discovery.

Powertrain Options:

Offered with the robust 4.0L inline-6 and the more powerful 4.7L V8 engines, along with multiple 4WD systems (Selec-Trac, Quadra-Trac II, Quadra-Drive) enhancing its off-road appeal.

📋 Manual Details

Systems Covered:

Engine Mechanical, Engine Fuel & Exhaust, Engine Cooling, Engine Lubrication, Engine Electrical, Starting & Charging, Ignition, Emission Control, Automatic Transmission, Manual Transmission (if applicable), Transfer Case, Drivetrain (Front & Rear Axles, Driveshafts, Differentials), Brakes (Hydraulic, ABS, Parking), Steering, Suspension (Front & Rear), Wheels & Tires, Body & Frame, HVAC, Electrical System (Wiring Diagrams, Components, Lighting, Power Accessories), Body Controls, Restraints (Airbags), Diagnostic Trouble Codes (DTCs), Maintenance, Lubrication & Scheduled Maintenance, Chassis & Body Adjustments, Troubleshooting

Page Count:

Estimated 2000+ pages (typical for a comprehensive factory-style service manual covering all models and engines)

Manual Type:

Service and Repair Manual

Language:

English

Format:

Downloadable Digital Format (PDF implied by description)

📖 Manual Coverage

Powertrain:

Detailed coverage of 4.0L PowerTech I6 and 4.7L Magnum V8 engines, including disassembly, assembly, diagnostics, and specifications. Transmission systems (45RFE/545RFE automatic, NV242/NV247/NV249 transfer cases) are thoroughly documented.

Chassis And Suspension:

In-depth coverage of front and rear suspension systems, steering components, brakes (including ABS), and wheel bearing service.

Repair Procedures:

Step-by-step repair instructions for all major vehicle systems, including engine overhauls, transmission rebuilds, brake system servicing, suspension component replacement, electrical system troubleshooting, and bodywork repairs.

Maintenance Schedule:

Detailed recommended maintenance schedules, fluid replacement intervals, and specifications for all fluid types and capacities.

Diagnostic Capabilities:

Comprehensive diagnostic procedures, including symptom-based troubleshooting, testing of sensors and actuators, interpretation of Diagnostic Trouble Codes (DTCs), and wiring diagrams for electrical system fault finding.

Special Tools:

Identification and usage instructions for specialized tools required for specific repair procedures.

📊 Manual Specifications

File Format:

PDF (Portable Document Format)

Print Quality:

High-resolution, optimized for clear viewing and printing. Includes detailed diagrams and illustrations.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine 1 Displacement:

4.0 Liters (242 cubic inches)

Engine 1 Configuration:

Inline-6 (I6)

Engine 1 Valvetrain:

Overhead Valve (OHV), 2 valves per cylinder

Engine 1 Power:

Approximately 190-195 hp @ 4600 rpm

Engine 1 Torque:

Approximately 235-245 lb-ft @ 3200 rpm

Engine 2 Displacement:

4.7 Liters (285 cubic inches)

Engine 2 Configuration:

V8

Engine 2 Valvetrain:

Overhead Valve (OHV), 2 valves per cylinder (early models) / Overhead Valve (OHV), 3 valves per cylinder (later models - e.g., High Output V8, though less common in 2004 WJ for base models)

Engine 2 Power:

Approximately 235 hp @ 4700 rpm (standard 4.7L) / 260 hp @ 5200 rpm (High Output, less common for 2004 base)

Engine 2 Torque:

Approximately 295 lb-ft @ 3200 rpm (standard 4.7L) / 325 lb-ft @ 3800 rpm (High Output)

Fuel Injection:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded gasoline

🔧 Transmission

Transmission Type Standard:

4-speed automatic (45RFE/545RFE)

Transmission Type Optional:

5-speed manual (NV3500 - rare on WJ, primarily for 4.0L models)

Transfer Case Options:

NV242 Selec-Trac (full-time 2WD/4WD), NV247 Quadra-Trac II (full-time 4WD with 2WD mode), NV249 Quadra-Trac (full-time 4WD, less common on later WJ)

Transfer Case Features:

Some systems feature electronic shift-on-the-fly capability and a neutral position for flat towing.

📐 Dimensions

Length:

Approximately 184.0 inches

Width:

Approximately 73.7 inches

Height:

Approximately 67.5 inches

Wheelbase:

Approximately 110.0 inches

Seating Capacity:

5

Cargo Volume Behind Rear Seat:

Approximately 37.5 cubic feet

Cargo Volume Max:

Approximately 74.5 cubic feet

Curb Weight:

Approximately 4,200 - 4,600 lbs (depending on engine and equipment)

Towing Capacity:

Up to 5,000 lbs (with proper equipment and trailer brake control)

🛡️ Safety Features

NHTSA Frontal Impact Driver:

Likely 4-star rating (based on typical performance of vehicles from this era)

NHTSA Frontal Impact Passenger:

Likely 4-star rating

ABS:

Standard Anti-lock Braking System (ABS) on all four wheels.

Traction Control:

Optional (often tied to higher trim levels or 4WD systems)

Airbags:

Front airbags for driver and passenger, optional side curtain airbags.

Seatbelts:

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

💡 Technology Features

Infotainment System:

Base models featured AM/FM radio with CD player. Optional upgrades included premium audio systems, in-dash CD changers, and navigation systems.

Driver Assistance Features:

Limited by modern standards. Primarily ABS. Some models might have had basic cruise control and rear parking assist sensors.

Connectivity Options:

No Bluetooth or advanced smartphone integration typical of modern vehicles. Might have had an auxiliary input for audio devices on some premium systems.

🔧 Maintenance

Oil Change Interval:

Typically 5,000 to 7,500 miles or 6 months, whichever comes first, depending on driving conditions and oil type used.

Transmission Fluid Change:

Recommended every 30,000 to 60,000 miles, depending on usage and fluid type (ATF+4 for automatics).

Coolant Change:

Initial change at 100,000 miles for HOAT coolant, then every 50,000 miles or 5 years.

Engine Oil Specification:

SAE 5W-30 synthetic blend or full synthetic, API SN or higher. For 4.0L, SAE 10W-30 can be used in warmer climates.

Transmission Fluid Specification:

Mopar ATF+4 (Automatic Transmission Fluid Type 9602).

Coolant Specification:

Chrysler HOAT (Hybrid Organic Additive Technology) antifreeze, typically orange or pink. Mixture of 50/50 antifreeze and distilled water.

Brake Fluid Specification:

DOT 3 or DOT 4.

Common Issues Powertrain:

Cracked cylinder heads on 4.7L V8 (especially earlier ones, though improved by 2004), issues with the radiator end tanks cracking, water pump leaks, and occasional transmission solenoid issues.

Common Issues Suspension:

Worn control arm bushings, worn ball joints, and leaky steering gearboxes are common due to age and mileage.

Common Issues Electrical:

Faulty power window regulators, HVAC blower motor resistor failures, and occasional issues with the electronic control modules (ECMs/PCMs).

Common Issues Body:

Rust on the unibody frame rails (especially in areas with road salt), tailgate and liftgate actuator failures, and worn interior trim components.

📚 Vehicle History

Brand Heritage:

Jeep has a long-standing reputation for off-road prowess and ruggedness, dating back to its WWII origins. The Grand Cherokee line, introduced in 1993, aimed to blend this capability with luxury and comfort.

Wj Generation Introduction:

The WJ generation of the Grand Cherokee debuted for the 1999 model year, replacing the ZJ. It featured a more refined unibody construction and improved on-road manners.

Wj Generation Updates:

Significant updates for the 2004 model year included revised interior trim, improved NVH (Noise, Vibration, and Harshness) characteristics, and potentially minor powertrain refinements.

Manufacturing Location:

Jefferson North Assembly, Detroit, Michigan, USA.

Production Years:

WJ Grand Cherokee produced from 1999 to 2004.

🏆 Awards & Recognition

Awards And Recognitions:

The Grand Cherokee WJ was generally well-received for its blend of luxury and off-road capability. While specific awards for the 2004 model year may be scarce, the generation often appeared on 'best of' lists for SUVs in its class during its production run.