🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Generation:

WJ

Year:

2004

👋 Introduction

Target Audience:

DIY enthusiasts and professional mechanics seeking dealership-level repair information.

Advantage:

Provides the same depth of information as dealer service manuals at a fraction of the cost and with instant availability.

Diy Focus:

Specifically written for the do-it-yourselfer with clear, step-by-step instructions.

Cost Effectiveness:

Inexpensive way to keep the vehicle working properly and avoid costly dealership repairs.

Accessibility:

Instant download, no shipping delays or costs for physical media.

Content Organization:

Numbered table of contents and bold figure numbers for quick information retrieval.

📋 Manual Details

Primary Coverage:

Complete service and repair for 2004 Jeep Grand Cherokee WJ

Scope:

All major vehicle systems and components

Estimated Pages:

Over 2000 (typical for a full service manual of this era, though exact digital count not provided)

Type:

Factory Authorized Service Manual / Repair Manual

Language:

English

Digital Format:

PDF

📖 Manual Coverage

Engine Mechanical:

Detailed procedures for engine disassembly, assembly, inspection, and repair for all WJ powertrains.

Engine Performance:

Fuel system, ignition system, cooling system, lubrication system, air intake, and exhaust system diagnostics and repair.

Transmission Automatic:

Service and repair for the 45RFE and 545RFE automatic transmissions, including valve body, torque converter, and electronic controls.

Transmission Manual:

Service and repair for the NV3550 manual transmission, if applicable to specific 2004 models.

Drivetrain:

Transfer case (NV242, NV247, NV249 variations), differentials (front and rear), axles, drive shafts, and U-joints.

Suspension Steering:

Front and rear suspension components (control arms, springs, shocks, bushings), steering system (rack and pinion, power steering pump, linkages).

Brakes:

Front and rear brake systems (disc brakes), ABS diagnostics and repair, parking brake system.

Electrical System:

Comprehensive wiring diagrams, charging system (alternator, battery), starting system, lighting, power distribution, and accessory circuits.

Climate Control:

HVAC system operation, diagnosis, and repair, including A/C system recharge and component replacement.

Safety Systems:

Supplemental Restraint System (SRS) - Airbags and seat belt pretensioners, diagnosis, and component replacement.

Body Interior:

Body panel removal and installation, door mechanisms, interior trim, seats, glass, and mirrors.

Body Exterior:

Bumpers, fenders, hood, liftgate, exterior lighting, and trim.

Instrumentation Controls:

Instrument cluster operation, gauges, warning lights, cruise control, and driver controls.

Multiplex Communication:

Diagnosis and repair of CAN (Controller Area Network) communication systems and related modules.

Maintenance:

Scheduled maintenance procedures, fluid level checks, filter replacements, tune-ups.

Troubleshooting:

Systematic diagnostic procedures for common and uncommon faults, guided by symptom charts and wiring diagrams.

Repair Rebuild:

Detailed step-by-step instructions for component removal, repair, reassembly, and installation, from minor fixes to major overhauls.

Diagnostics:

Diagnostic Trouble Codes (DTCs) interpretation, scan tool usage, and electrical circuit testing.

Specifications:

Torque specifications, clearances, fluid capacities, and other critical technical data for all procedures.

Depth:

Comprehensive, covering from basic fluid changes to complete engine and transmission rebuilds.

Detail Level:

Highly detailed with substeps, notes, cautions, and warnings for critical information.

Illustrations:

Hundreds of photos, drawings, and enlarged inset illustrations to clarify procedures and parts identification.

Wiring Diagrams:

Detailed, integrated wiring diagrams for ease of electrical system diagnosis and repair.

📊 Manual Specifications

Format:

PDF

Compatibility:

All PC-based Windows operating systems, Mac, and Linux.

Printable:

Yes, all pages are printable.

Binding:

Not Applicable (Digital Download)

Paper Quality:

Not Applicable (Digital Download)

Software Requirements:

WinZip (for extraction), Adobe PDF Reader.

⚙️ Engine Specifications

Engine Options:

4.0L I6 (PowerTech) and 4.7L V8 (High Output/HO)

4.0L I6 Horsepower:

190 hp @ 4600 rpm (approx.)

4.0L I6 Torque:

235 lb-ft @ 3200 rpm (approx.)

4.7L V8 Horsepower:

235 hp @ 4750 rpm (Standard), 265 hp @ 5500 rpm (HO)

4.7L V8 Torque:

295 lb-ft @ 3200 rpm (Standard), 330 lb-ft @ 3700 rpm (HO)

Fuel Delivery:

Multi-port Fuel Injection (MPI)

Fuel Type:

Unleaded gasoline

Coolant Type:

Mopar Antifreeze/Coolant (MS-9769) or equivalent (Orange)

🔧 Transmission

Transmission Type I6:

4-speed automatic (45RFE)

Transmission Type V8:

4-speed automatic (45RFE standard, 545RFE optional/later)

Manual Transmission:

5-speed manual (NV3550) available on some I6 models.

Transfer Case Options:

Selec-Trac (NV242), Quadra-Trac II (NV247), Quadra-Drive (NV247 with ELSD)

Automatic Transmission Fluid:

ATF+4 (MS-9602)

Manual Transmission Fluid:

Mopar Manual Transmission Lubricant (MS-9224) or equivalent (API GL-3)

📐 Dimensions

Wheelbase:

116.1 inches (2950 mm)

Length:

184.0 - 187.3 inches (4674 - 4758 mm)

Width:

74.5 inches (1892 mm)

Height:

67.5 - 68.4 inches (1715 - 1737 mm)

Curb Weight Approx:

4,200 - 4,700 lbs (1905 - 2132 kg) depending on configuration

🛡️ Safety Features

NHTSA Front Impact:

4 stars (driver and passenger, 2003 test)

IIHS Side Impact:

Acceptable (2003 test)

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Optional on some models, part of Quadra-Trac II/Quadra-Drive systems.

Airbags:

Standard front airbags, optional side curtain airbags on some later models.

Seatbelts:

Three-point seatbelts for all occupants, pretensioners for front seats.

💡 Technology Features

Audio System:

Optional Infinity Gold audio system with CD player, AM/FM stereo, and optional premium sound with amplifier and subwoofer.

Navigation:

Optional factory navigation system available on higher trim levels.

Cruise Control:

Standard on most trims.

Parking Sensors:

Optional rear park assist system.

Telematics:

Uconnect hands-free communication system was not a standard feature on the 2004 WJ, but aftermarket integration is possible.

🔧 Maintenance

Oil Change Interval:

Every 3,000-7,500 miles (10W-30 or 5W-30 synthetic) or 6 months, depending on driving conditions and oil type used.

Engine Air Filter:

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

Transmission Fluid Change:

Recommended every 30,000-60,000 miles, especially for severe service. ATF+4 is a 'fill for life' fluid, but regular changes are recommended for longevity.

Engine Oil Capacity 4.0L:

5.7 quarts (5.4 L) with filter

Engine Oil Capacity 4.7L:

6.8 quarts (6.4 L) with filter

Coolant Capacity:

Approx. 10.5 - 12.0 quarts (9.9 - 11.4 L) depending on engine

Brake Fluid:

DOT 3

Common Problems:

Headliner sagging, rear main seal leaks (4.0L), cooling system issues (overheating, cracked radiator end tanks), transfer case chain stretch, differential bearing noise, steering/suspension component wear (ball joints, tie rod ends), PCM failure.

Common Problems Electrical:

Window regulator failures, HVAC blower motor issues, various sensor failures (e.g., crankshaft position sensor).

📚 Vehicle History

Brand Identity:

Jeep, an iconic American brand with a long history of producing capable off-road vehicles.

Wj Generation Intro:

The WJ Grand Cherokee replaced the ZJ generation for the 1999 model year, featuring a more refined interior and improved on-road manners.

Wj Facelift:

The 2004 model year represents the final year of the WJ generation, following a mid-cycle refresh for 2004 which included minor styling updates and powertrain enhancements (like the 4.7L HO).

Production Years:

1999-2004

Manufacturing Plant:

Jefferson North Assembly Plant, Detroit, Michigan.

🏆 Awards & Recognition

Off Road Capability:

Consistently recognized for its off-road prowess and towing capabilities, reflecting the Jeep brand's heritage.

Consumer Reports:

Variable consumer satisfaction ratings due to reliability concerns in certain areas, though generally praised for comfort and capability.