🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Model Code: WJ Year: 2003 👋 Introduction Market Position Segment: Mid-size Luxury SUV Target Audience: Families, Off-road Enthusiasts, Luxury SUV Buyers Competitive Analysis Key Competitors: Ford Explorer, Chevrolet TrailBlazer, Toyota 4Runner, Nissan Pathfinder, Lexus RX Key Features Vehicle Strengths: Comfortable Ride, Capable Off-Road Performance (with proper trims), Spacious Interior, Strong Powertrains Manual Value Proposition Benefits: Empowers owners and technicians with detailed procedures for maintenance, repair, and diagnostics, saving time and money. 📋 Manual Details Coverage Areas Manual Type: Factory Service Manual / Repair Manual Language: English Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Engine (4.0L, 4.7L), Transmission (42RE, 45RFE, NV242, NV247 Transfer Case) Chassis: Suspension (Front/Rear), Steering, Brakes (Front/Rear), Drivetrain (Axles, Driveshafts, Differentials) Electrical: Wiring Diagrams, Lighting, Ignition, Starting, Charging, Instrument Cluster, Body Control Modules, Powertrain Control Modules (PCM) Body: Exterior Body Panels, Interior Trim, HVAC System, Doors, Windows, Seats, Roof Procedures Included Maintenance: Scheduled Maintenance Intervals, Fluid Changes, Filter Replacements, Lubrication Diagnostics: Troubleshooting Guides, Diagnostic Trouble Codes (DTCs), Symptom-Based Diagnostics Repair: Component Removal and Installation, Overhaul Procedures, Component Reassembly Specifications: Torque Specifications, Tolerances, Clearances, Electrical Schematics Wheel Alignment Specs: Front and rear wheel alignment specifications (caster, camber, toe) for various tire sizes and trims. Brake System Service: Procedures for replacing brake pads, rotors, calipers, bleeding the brake system, and servicing ABS components. Body And Paint: Basic information on body panel removal and installation, door mechanisms, and exterior trim components. Technical Depth Level: Comprehensive Factory Level - Suitable for Professional Technicians and Advanced DIYers Engine Rebuild: Detailed procedures for complete engine disassembly, inspection, measurement, and reassembly, including bearing clearances, piston ring gaps, and valve seat conditioning. Transmission Overhaul: Comprehensive steps for transmission disassembly, component identification (clutches, seals, servos), valve body troubleshooting, and reassembly with correct specifications. Suspension And Steering: Detailed procedures for replacing ball joints, control arm bushings, tie rod ends, steering gear, and shock absorbers, including alignment specifications. Electrical System Diagnostics: In-depth coverage of wiring diagrams for all major systems, including troubleshooting guides for common electrical faults, component testing, and PCM/BCM diagnostic procedures. HVAC System Repair: Detailed instructions for diagnosing and repairing HVAC components such as the blower motor, evaporator, condenser, refrigerant system, and blend door actuators. Fuel System Diagnostics: Procedures for testing fuel pump pressure, fuel injectors, and evaporative emissions (EVAP) system. Cooling System Service: Detailed steps for radiator removal/installation, water pump replacement, thermostat testing, and heater core diagnosis. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable Text Content Print Quality Resolution: High Resolution for Clear Diagrams and Text Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine 1 Displacement: 4.0L (242 cu in) Engine 1 Configuration: Inline-6 (I6) OHV Engine 1 Power Hp: Approx. 195 hp @ 4600 rpm Engine 1 Torque Lb-Ft: Approx. 230 lb-ft @ 3200 rpm Engine 2 Displacement: 4.7L (287 cu in) Engine 2 Configuration: V8 SOHC Engine 2 Power Hp: Approx. 235 hp @ 4750 rpm (for 2003 HO version, standard 4.7L approx. 227 hp) Engine 2 Torque Lb-Ft: Approx. 295 lb-ft @ 3200 rpm (for 2003 HO version, standard 4.7L approx. 285 lb-ft) Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (MPI) Performance Engine Breathing: Naturally Aspirated 🔧 Transmission Standard Transmission Type Std: 4-Speed Automatic (42RE on 4.0L, 45RFE on 4.7L) Features Transfer Case 1: NV242 'Selec-Trac' (2WD, Full-time 4WD, 4-Hi Part-time, 4-Lo Part-time) Transfer Case 2: NV247 'Quadra-Drive' (Full-time 4WD with Variable Torque Distribution) Fluid Specifications Automatic Transmission Fluid Type: ATF+4 (Chrysler Material Standard MS-9602) 📐 Dimensions Exterior Wheelbase Inches: 116.1 Length Inches: 184.5 Width Inches: 74.5 Height Inches: 70.5 Weights Curb Weight Lbs Min: 4,461 (for 4.0L) Curb Weight Lbs Max: 4,730 (for 4.7L HO with Quadra-Drive) Cargo Cargo Volume Cu Ft Behind 2Nd Row: Approx. 37.2 Cargo Volume Cu Ft Max: Approx. 77.2 🛡️ Safety Features Ratings NHTSA Frontal Driver: Good NHTSA Frontal Passenger: Good NHTSA Side Driver: N/A (Side Impact Rating not consistently available for all 2003 configurations tested by NHTSA) IIHS Moderate Overlap Frontal: Acceptable Active Features ABS: Standard 4-wheel ABS Traction Control: Available (Part of Quadra-Trac II / Quadra-Drive systems) Passive Features Airbags Front: Standard Dual Front Airbags Airbags Side: Available Front Seat-Mounted Side Airbags Seatbelts: 3-point seatbelts with pretensioners 💡 Technology Features Infotainment Audio System: Optional premium Infinity sound system, CD player, cassette player (early models), optional navigation system. Driver Assistance Cruise Control: Standard Cruise Control Parking Assist: Optional Rear Parking Sensors Connectivity Remote Keyless Entry: Standard or Optional depending on trim level Comfort Convenience Climate Control: Manual or Optional Dual-Zone Automatic Climate Control 🔧 Maintenance Service Intervals Oil Change Interval Miles: Every 3,000-7,500 miles or 6 months, depending on oil type and driving conditions (consult manual for specific recommendations) Engine Coolant Flush Interval Miles: Every 30,000-100,000 miles or 2-5 years (depending...