Jeep Grand Cherokee WJ 2003 Service Repair Workshop Manual

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🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Year: 2003 Generation Generation Code: WJ Codes Chassis Code: WJ 👋 Introduction Market Position Segment: Mid-size Luxury SUV Competitive Analysis Competitors...

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Type: Car

Vendor:

Sku: 448864

Tags: 2003 Car Cars Grand Cherokee WJ Jeep Misc

Product variants

Description

🏷️ Basic Information

Identification

Make:

Model:

Grand Cherokee

Year:

Generation

Generation Code:

Codes

Chassis Code:

👋 Introduction

Market Position

Segment:

Mid-size Luxury SUV

Competitive Analysis

Competitors 2003:

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

Key Features

Platform:

WJ platform, known for its refined ride and improved interior compared to its predecessor.

📋 Manual Details

Coverage Areas

Primary Coverage:

Complete Service and Repair

Page Count

Estimated Pages:

1500+

Manual Type

Type:

Workshop Service Manual

Language

Language:

English

Format

Format:

Digital (PDF)

📖 Manual Coverage

Systems Covered

Powertrain:

Engine (4.0L, 4.7L), Transmission (42RE, 45RFE/545RFE), Transfer Case (NV242, NV247)

Chassis:

Suspension (Front/Rear), Steering, Brakes (ABS, Conventional), Driveline

Electrical:

Wiring Diagrams, Lighting, Instruments, Power Accessories, HVAC Controls, Audio System

Body:

Body Panels, Doors, Windows, Seats, Interior Trim, Exterior Trim

Procedures Included

Maintenance:

Scheduled Maintenance, Oil Changes, Filter Replacements, Lubrication

Troubleshooting:

Diagnostic Procedures, Fault Codes, Symptom-Based Diagnostics

Repair:

Engine Overhaul, Transmission Rebuild, Brake System Repair, Suspension Component Replacement

Installation:

Component Replacement, Accessory Installation

Technical Depth

Depth:

Comprehensive diagnostic, repair, and overhaul procedures for all major vehicle systems.

📊 Manual Specifications

File Format

PDF Quality:

High-resolution, searchable PDF with clear text and image rendering.

Print Quality

Printable:

Yes, designed for printing with clear formatting.

Binding Type

Binding:

N/A (Digital Format)

Paper Type

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Primary Engine

Engine 1:

4.0L Inline-6 'PowerTech' I6

Engine 2:

4.7L V8 'PowerTech' V8

Performance

Engine 1 Hp:

195 hp @ 4400 rpm

Engine 1 Torque:

230 lb-ft @ 3200 rpm

Engine 2 Hp:

235 hp @ 4500 rpm (Standard), 260 hp @ 5000 rpm (HO)

Engine 2 Torque:

295 lb-ft @ 3200 rpm (Standard), 325 lb-ft @ 3500 rpm (HO)

Fuel System

Fuel Delivery:

Multi-port Fuel Injection (MPI)

🔧 Transmission

Standard

Transmission 1:

42RE 4-Speed Automatic (with 4.0L engine)

Optional

Transmission 2:

45RFE/545RFE 4-Speed Automatic (with 4.7L engine)

Features

Transfer Case 1:

Selec-Trac NV242 (Full-time 2WD/4WD Part-time)

Transfer Case 2:

Quadra-Trac II NV247 (Full-time 4WD with 2-speed transfer case, electronically controlled)

📐 Dimensions

Exterior

Wheelbase:

116.0 inches

Length:

185.5 inches

Width:

74.8 inches

Height:

67.4 inches

Interior

Passenger Volume:

Approx. 105.0 cu ft

Cargo

Cargo Volume Behind Rear Seat:

Approx. 38.0 cu ft

Weights

Curb Weight Min:

Approx. 4,160 lbs

Gross Vehicle Weight Rating Max:

Approx. 5,600 lbs

🛡️ Safety Features

Ratings

NHTSA Frontal Driver Side:

★★★★☆ (4-star)

NHTSA Frontal Passenger Side:

★★★★☆ (4-star)

IIHS Frontal Offset:

Active Features

Standard

Traction Control:

Available (ASR)

Electronic Stability Control:

Available (Electronic Stability Program - ESP)

Passive Features

Airbags Front:

Standard Dual Frontal Airbags

Airbags Side:

Optional Front Side Curtain Airbags

Seat Belts:

3-point front and rear seat belts

💡 Technology Features

Infotainment

Audio System:

Available premium audio systems, including Infinity Gold series. CD player, optional CD changer.

Navigation:

Optional factory navigation system (Recalibration may be required after certain repairs).

Driver Assistance

Cruise Control:

Standard

Parking Assist:

Optional rear parking assist sensors.

Connectivity

Phone Integration:

Optional Uconnect hands-free communication system (for later model years, but the basis for integration is covered).

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 7,500 miles or 6 months, whichever comes first (under normal driving conditions).

Transmission Fluid Change:

Every 30,000-60,000 miles, depending on driving conditions and transmission type.

Coolant Flush:

Every 30,000-60,000 miles or 2-4 years.

Fluid Specifications

Engine Oil 4.0L:

API SJ or higher, SAE 5W-30 (or 10W-30 depending on climate)

Engine Oil 4.7L:

API SL or higher, SAE 5W-30

Transmission Fluid 42Re:

ATF+4 (MS-9602)

Transmission Fluid 45Rfe/545Rfe:

ATF+4 (MS-9602)

Coolant:

Chrysler/Mopar HOAT (Hybrid Organic Additive Technology) Antifreeze/Coolant, a 50/50 mix with distilled water.

Known Issues

Engine Performance:

Spark plug blow-out (4.0L), head gasket leaks (4.7L), occasional overheating.

Transmission:

Slipping, hard shifts, occasional failure of solenoid packs or valve body components.

Suspension Steering:

Worn control arm bushings, ball joints, and tie rod ends. Death wobble can occur with worn steering components.

Electrical:

Window regulator failures, HVAC blower motor resistor failure, instrument cluster issues.

📚 Vehicle History

Brand Heritage

Jeep Legacy:

Jeep has a long-standing reputation for off-road capability and durable SUVs since WWII.

Model Evolution

Wj Generation Start:

Wj Refresh:

The 2003 model year represents a mid-cycle refresh for the WJ generation, introducing revised styling, improved interior, and updated features.

Production

Manufacturing Location:

Jefferson North Assembly Plant, Detroit, Michigan, USA

🏆 Awards & Recognition

Recognitions

Automotive Press:

Often praised by automotive journalists for its refinement, comfortable ride, and capable powertrains for its class.

Ratings

Reliability Consumer Reports:

Mixed to Average (based on historical data, specific model year reliability can vary).