Jeep Grand CHEROKEE WJ Parts Manual Catalog 2003

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🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Model Code: WJ Year: 2003 👋 Introduction Market Position Target Audience: Jeep owners, independent repair shops, parts suppliers, restorers. Value Proposition:...

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Description

🏷️ Basic Information

Identification

Make:

Model:

Grand Cherokee

Model Code:

Year:

👋 Introduction

Market Position

Target Audience:

Jeep owners, independent repair shops, parts suppliers, restorers.

Value Proposition:

Enables accurate identification and sourcing of genuine or aftermarket parts for the 2003 Grand Cherokee WJ.

Competitive Analysis

Alternatives:

Other parts lookup systems (e.g., online VIN decoders, dealer systems), generic repair manuals.

Manual Advantage:

Specificity of OEM part numbers and detailed, model-specific exploded diagrams.

Key Features

Unique Selling Point 1:

Every part cataloged with OEM part number.

Unique Selling Point 2:

High-quality exploded diagrams for visual clarity.

Unique Selling Point 3:

Zoom capability for minute details.

Vehicle Segment

Type:

Full-size luxury SUV / Mid-size luxury SUV.

Jeep Positioning:

Jeep's flagship model, offering enhanced comfort, features, and capability.

Key Vehicle Features

Off Road Capability:

Renowned Jeep off-road prowess, particularly with Quadra-Drive system.

Interior Comfort:

Luxurious interior appointments for its era, comfortable ride.

📋 Manual Details

Coverage Areas

All Components:

Yes, comprehensive coverage of all factory-installed components.

Assembly Disassembly:

Focuses on part identification and interrelation, not detailed disassembly procedures.

Electrical System:

Identification of electrical components and their related parts.

Powertrain:

Engine, transmission, driveline components.

Chassis:

Suspension, steering, brake components.

Body:

Exterior and interior body panels, trim, glass, hardware.

Page Count

Estimated Pages:

Likely over 800 pages, typical for a comprehensive factory parts catalog.

Manual Type

Type:

Factory Parts Catalog / Parts Manual

Purpose:

Parts identification, ordering, and cataloging for service and restoration.

Language

Primary Language:

English

Format

Digital Format:

Likely PDF (for ease of search and viewing exploded diagrams).

Print Format:

If sold as a physical product, typically bound paperback or comb-bound.

📖 Manual Coverage

Systems Covered

Engine Assembly:

Includes all internal and external engine components, gaskets, seals, fasteners.

Cooling System:

Radiator, hoses, water pump, thermostat, fan assembly parts.

Fuel System:

Fuel pump, injectors, lines, tank, filter components.

Exhaust System:

Manifolds, catalytic converters, mufflers, pipes, hangers.

Drivetrain Front:

CV axles, differentials, front suspension and steering linkage components.

Drivetrain Rear:

Rear axle housing, gears, shafts, bearings, rear suspension components.

Transfer Case:

Internal components, seals, housing for Selec-Trac or Quadra-Drive systems.

Transmission Automatic:

Components for 42RE, 45RFE, or 545RFE transmissions.

Braking System:

Calipers, rotors, pads, lines, master cylinder, ABS components.

Suspension Front:

Control arms, ball joints, bushings, springs, shocks.

Suspension Rear:

Control arms, track bar, springs, shocks, bushings.

Steering System:

Steering gear, tie rods, drag link, steering column components.

Wheel And Tire:

Wheels, lug nuts, tire pressure monitoring system (if equipped).

Electrical Body:

Wiring harnesses, lighting, switches, power accessories.

HVAC System:

Compressor, condenser, evaporator, heater core, blower motor, controls.

Interior Trim:

Dashboard components, door panels, seat parts, headliner components.

Exterior Trim:

Bumpers, grilles, fender flares, moldings, emblems.

Glass And Seals:

Windshield, side glass, rear glass, window regulators, seals.

Fasteners And Hardware:

Specific bolts, nuts, clips, and other hardware for various assemblies.

Procedures Included

Part Identification:

Primary focus: detailed visual identification of every part with OEM numbers.

Exploded Diagrams:

Comprehensive exploded views illustrating assembly order and relationships.

Part Number Lookup:

Essential for sourcing correct replacement parts.

Reassembly Guidance:

Implied through exploded diagrams for correct part placement.

Technical Depth

Depth:

Highly detailed for parts identification and assembly context. Not a diagnostic or repair manual.

Diagnostic Procedures:

None.

Repair Instructions:

None (focus is on part identification, not 'how-to' repair).

Wiring Diagrams:

Not typically included in parts catalogs; separate electrical manuals are needed.

📊 Manual Specifications

File Format

Digital Medium:

PDF is standard for searchable text and high-resolution diagrams.

Searchability:

Excellent if text-based PDF (OCR'd or natively digital).

Print Quality

Diagram Resolution:

Designed for clear visibility, often with zoom capability in digital formats.

Text Clarity:

High, as it's based on OEM documentation.

Binding Type

Physical Binding:

Varies; could be comb-bound, stapled, or perfect bound for physical copies.

Paper Type

Physical Paper:

Typically quality paper stock, suitable for frequent reference.

Content Accuracy

Accuracy Standard:

Based on Original Equipment Manufacturer (OEM) data.

Accessibility

Search Functionality:

If PDF, allows searching by part name or number.

Completeness

Coverage Scope:

Comprehensive for all factory parts, from smallest fastener to major assemblies.

⚙️ Engine Specifications

Primary Engine Option 1

Engine Code:

PowerTech 4.0L (High Output)

Displacement:

3952 cc (241 cu in)

Configuration:

Inline 6-cylinder, Overhead Valve (OHV)

Horsepower:

190 hp @ 4600 rpm

Torque:

235 lb-ft @ 3200 rpm

Fuel System:

Sequential Multi-Port Electronic Fuel Injection (MPI)

Bore X Stroke:

3.88 x 3.41 in (98.5 x 86.7 mm)

Compression Ratio:

8.7:1

Engine Management:

Chrysler JTEC (or equivalent)

Secondary Engine Option

Engine Code:

PowerTech 4.7L V8 (High Output)

Displacement:

4701 cc (287 cu in)

Configuration:

V8, Overhead Valve (OHV), 90-degree bank angle

Horsepower:

235 hp @ 4750 rpm

Torque:

300 lb-ft @ 3200 rpm

Fuel System:

Sequential Multi-Port Electronic Fuel Injection (MPI)

Bore X Stroke:

3.72 x 3.38 in (94.5 x 85.8 mm)

Compression Ratio:

9.0:1

Engine Management:

Chrysler NGC (Next Generation Controller)

🔧 Transmission

Standard 4.0L

Type:

42RE 4-Speed Automatic

Gear Ratios 1:

2.74:1

Gear Ratios 2:

1.57:1

Gear Ratios 3:

1.00:1

Gear Ratios 4:

0.69:1

Reverse Ratio:

2.29:1

Fluid Type:

ATF+4 (Chrysler Mopar Material Number 05013457AA)

Optional 4.7L

Type:

45RFE / 545RFE 4-Speed Automatic (later 545RFE)

Gear Ratios 1:

2.87:1

Gear Ratios 2:

1.51:1

Gear Ratios 3:

1.00:1

Gear Ratios 4:

0.75:1

Reverse Ratio:

2.29:1

Fluid Type:

ATF+4 (Chrysler Mopar Material Number 05013457AA)

Drivetrain Options

Transfer Case 4.0L:

NV231J (Command-Trac) - Part-time, 2-speed

Transfer Case 4.7L:

NV247 (Selec-Trac) - Full-time, 2-speed with electronic shift

Transfer Case Optional:

NV247 HD (Quadra-Drive) - Full-time, 2-speed with electronic traction control differentials

Axle Ratios:

Commonly 3.73 or 3.73 for both engines, depending on trim and options.

📐 Dimensions

Exterior

Wheelbase:

116.1 inches (2950 mm)

Length:

184.6 inches (4690 mm)

Width:

74.9 inches (1903 mm)

Height:

67.4 inches (1712 mm)

Front Track:

61.8 inches (1570 mm)

Rear Track:

61.6 inches (1565 mm)

Ground Clearance:

Approx. 8.7 inches (221 mm) depending on tire size and suspension.

Interior

Passenger Volume:

Approx. 105.4 cu ft (2984 L)

Seating Capacity:

Cargo

Cargo Volume Behind 2Nd Row:

37.0 cu ft (1047 L)

Cargo Volume With 2Nd Row Folded:

72.4 cu ft (2049 L)

Weights

Curb Weight 4.0L:

Approx. 4,350 lbs (1973 kg)

Curb Weight 4.7L:

Approx. 4,570 lbs (2073 kg)

Gross Vehicle Weight Rating Gvwr:

Approx. 5,800-6,000 lbs (2630-2722 kg) depending on configuration.

Towing Capacity:

Up to 5,000 lbs (2268 kg) with optional tow package.

Payload Capacity:

Approx. 800-1000 lbs (363-454 kg) depending on configuration.

Wheels And Tires

Wheel Bolt Pattern:

5 x 114.3 mm (5 x 4.5 inches)

Standard Tire Size 4.0L:

P225/75R16

Optional Tire Size 4.0L:

P235/65R17

Standard Tire Size 4.7L:

P235/65R17

Optional Tire Size 4.7L:

P235/60R18

🛡️ Safety Features

Ratings

NHTSA Front Impact Driver:

Good (for 2002-2004 models tested)

NHTSA Front Impact Passenger:

Good (for 2002-2004 models tested)

NHTSA Side Impact Driver:

Acceptable (for 2002-2004 models tested)

NHTSA Side Impact Passenger:

Acceptable (for 2002-2004 models tested)

IIHS Frontal Offset:

Good (for 2002-2004 models tested)

Active Features

Standard (4-wheel disc with ABS)

Traction Control:

Available (especially with Quadra-Drive)

Electronic Stability Control:

Not commonly available or standard on the 2003 WJ.

Passive Features

Airbags Front:

Driver and front passenger airbags standard.

Airbags Side:

Optional front seat-mounted side airbags.

Seatbelts:

3-point front and rear seatbelts.

Rollover Protection:

Built into the unibody structure.

💡 Technology Features

Infotainment

Audio System:

Optional Infinity Gold premium sound system, CD player, cassette player.

Navigation:

Optional factory navigation system available on higher trims.

Climate Control:

Manual or optional dual-zone automatic climate control.

Driver Assistance

Cruise Control:

Standard feature.

Parking Sensors:

Optional rear parking assist system.

Connectivity

Phone Integration:

Optional Uconnect hands-free communication system (late 2003 models or aftermarket).

Remote Keyless Entry:

Available on most trims.

Other Features

Power Seats:

Optional, with memory function for driver's seat.

Sunroof:

Optional power sunroof.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000-5,000 miles or 6 months (check manual for specific oil type).

Engine Air Filter:

Replace every 15,000-30,000 miles or as needed based on driving conditions.

Cabin Air Filter:

Replace every 15,000-20,000 miles.

Transmission Fluid Change:

Inspect every 30,000 miles, replace fluid and filter around 50,000-60,000 miles, or more frequently under severe use.

Coolant Flush:

Replace coolant every 30,000-50,000 miles or 3-5 years.

Spark Plugs:

Platinum or Iridium plugs: 100,000 miles (for 4.7L); Copper plugs (for 4.0L): 30,000 miles.

Brake Fluid Flush:

Replace every 2-3 years or 45,000 miles.

Fluid Specifications

Engine Oil 4.0L:

SAE 10W-30, API SN or equivalent. Capacity: 5 quarts (4.7L) with filter.

Engine Oil 4.7L:

SAE 5W-30, API SN or equivalent. Capacity: 6 quarts (5.7L) with filter.

Coolant:

Mopar Antifreeze/Coolant HOAT (50/50 mix with distilled water). Capacity: ~11 quarts (10.4L).

Power Steering Fluid:

Mopar Power Steering Fluid (MS-5901) or equivalent.

Brake Fluid:

DOT 3.

Known Issues

Common Issue 1:

Heater Treater (blend door actuator failure in HVAC system).

Common Issue 2:

Cracked cylinder heads on the 4.7L V8 (especially earlier models).

Common Issue 3:

Water pump leaks (often replaced with serpentine belt).

Common Issue 4:

Transfer case chain stretch or wear (especially on Quadra-Drive systems).

Common Issue 5:

Front suspension wear (ball joints, tie rods, control arm bushings).

Common Issue 6:

Rear main seal leaks.

Common Issue 7:

Transmission cooler line leaks or internal transmission issues.

📚 Vehicle History

Brand Heritage

Jeep Legacy:

Founded on robust off-road capabilities and iconic design, dating back to WWII Willy's Jeep.

Model Evolution

Grand Cherokee Introduction:

First introduced in 1993 as a more luxurious alternative to the Cherokee XJ.

Wj Generation:

Second generation Grand Cherokee, produced from 1999 to 2004.

Wj Facelift:

Received a significant refresh for the 2002 model year, including updated styling and powertrains.

2003 Updates:

Minor refinements; the 4.7L V8 received a power increase and the 545RFE transmission became more prevalent.

Production

Manufacturing Location:

Jefferson North Assembly Plant, Detroit, Michigan, USA.

Production Years:

1999-2004 model years.

Market Segment:

Mid-size luxury SUV.

🏆 Awards & Recognition

Recognitions

Segment Awards:

The Grand Cherokee WJ consistently ranked well in its segment for off-road capability and comfort.

Consumer Ratings:

Generally received positive reviews from automotive journalists and consumers for its blend of luxury and utility.

Certifications

Safety Certifications:

Met all federal motor vehicle safety standards (FMVSS) for its model year.