🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Applicable Years: 1999, 2000, 2001, 2002, 2003, 2004 Codes Internal Platform Code: WJ 👋 Introduction Market Position Segment: Mid-size Luxury SUV Competitive Analysis Key Competitors: Ford Explorer, Chevrolet Blazer/TrailBlazer, Toyota 4Runner, Nissan Pathfinder, Land Rover Discovery Key Features Distinguishing Attributes: Renowned Jeep off-road capability, comfortable ride, spacious interior, available powerful V8 engine options, distinctive styling. 📋 Manual Details Coverage Areas Primary Coverage: Complete Service and Repair for Jeep Grand Cherokee WJ (1999-2004) Page Count Estimated Page Count: Over 2000 pages (typical for comprehensive manuals of this era) Manual Type Manual Classification: Factory Service Manual / Workshop Manual Language Language: English Format Digital Format: PDF (Searchable, Printable) 📖 Manual Coverage Systems Covered Powertrain: Engine, Fuel System, Ignition, Exhaust, Transmission (Automatic and Manual), Driveline Chassis: Suspension (Front & Rear), Steering, Brakes (ABS, Front & Rear) Electrical: Wiring Diagrams, Body Control Module (BCM), Powertrain Control Module (PCM), Lighting, HVAC Controls, Instrumentation, Audio Systems, Security Systems Body And Trim: Body Panels, Doors, Windows, Seats, Interior Trim, Exterior Trim, Glass Procedures Included Maintenance: Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks and Replacements, Tune-ups Repair: Component Disassembly/Reassembly, Diagnosis and Testing, Component Replacement, Rebuild Procedures Troubleshooting: Diagnostic Trouble Codes (DTCs), Symptom-Based Troubleshooting, Electrical Schematics Interpretation Technical Depth Depth Of Information: Comprehensive: From basic fluid changes to complete engine and transmission rebuilds, including detailed electrical diagnostics and wiring schematics. 📊 Manual Specifications File Format Digital File Type: PDF Print Quality Searchability And Printability: High Resolution, Fully Searchable Text, Printable Pages Binding Type Physical Binding: N/A (Digital Format) Paper Type Physical Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine 1 Code And Type: 4.0L Inline-6 (PowerTech) - OHV 12-Valve Engine 1 Displacement: 3952 cc (241 cubic inches) Engine 1 Horsepower: 190-205 hp (depending on year) Engine 1 Torque: 235-255 lb-ft (depending on year) Optional Engine Engine 2 Code And Type: 4.7L V8 (PowerTech) - SOHC 16-Valve Engine 2 Displacement: 4701 cc (287 cubic inches) Engine 2 Horsepower: 220-235 hp (depending on year) Engine 2 Torque: 285-312 lb-ft (depending on year) Performance Fuel Type: Unleaded Gasoline Fuel System Induction Type: Electronic Fuel Injection (EFI) / Multi-Port Fuel Injection (MPI) Engine Management ECU Type: Chrysler NGC (Next Generation Controller) or similar variants 🔧 Transmission Standard Transmission Type 40L Engine: 4-speed Automatic (42RE, 44RE, or 45RFE) Optional Transmission Type 47L Engine: 4-speed Automatic (44RE or 45RFE) Manual Transmission Availability: Rare, not widely offered on US models, primarily for export markets or specific trims (e.g., NV3550 5-speed manual). Features Transfer Case Options: Command-Trac (NV231 J), Selec-Trac (NV242 J), Quadra-Drive (NV247) Fluid Specs Automatic Transmission Fluid Type: ATF+4 (Chrysler Material Specification MS-9602) or equivalent 📐 Dimensions Exterior Wheelbase: 116.1 inches (2949 mm) Length: 184.6 inches (4689 mm) Width: 73.5 inches (1867 mm) Height: 67.0 inches (1702 mm) Weights Curb Weight Approx: 4200 - 4700 lbs (1905 - 2132 kg), varies by engine and trim Cargo Cargo Volume Behind Rear Seat: 37.7 cubic feet (1067 liters) Cargo Volume With Rear Seat Folded: 77.0 cubic feet (2180 liters) 🛡️ Safety Features Ratings NHTSA Front Impact Driver: 4 Stars (1999-2004 models) NHTSA Front Impact Passenger: 4 Stars (1999-2004 models) IIHS Side Impact Rating: Acceptable (for models equipped with side airbags, if applicable) Active Features ABS: Standard on all models Traction Control: Optional or standard depending on trim and year (e.g., Electronic Traction Control) Passive Features Airbags: Dual front airbags standard; optional side-impact airbags available on later models. 💡 Technology Features Infotainment Audio System Options: Factory AM/FM/CD, Cassette, Optional Infinity speaker systems, optional premium sound with subwoofer. Navigation System: Optional factory navigation system available on higher trims from around 2002 onwards. Driver Assistance Cruise Control: Standard Parking Assist: Optional rear parking sensors available on some models. Connectivity Telematics: Optional SiriusXM Satellite Radio, Uconnect Hands-Free communication system (introduced late in the generation, more common on later Chrysler vehicles). 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 - 7,500 miles (8,000 - 12,000 km) or 6 months, depending on driving conditions and oil type used. Transmission Fluid Change Interval: Every 30,000 - 60,000 miles (48,000 - 96,000 km) or as per severe service schedule. Coolant Flush Interval: Every 30,000 - 50,000 miles (48,000 - 80,000 km) or 2-3 years. Fluid Specifications Engine Oil Specification: API SJ or higher, SAE 5W-30 or 5W-40 (check owner's manual for specific recommendations based on temperature). Coolant Type: Chrysler HOAT (Hybrid Organic Additive Technology) or equivalent (e.g., Mopar 10 Year / 100,000 Mile Coolant). Brake Fluid Type: DOT 3 Known Issues Common Problems Engine: Cracked cylinder heads on early 4.7L V8 models, valve stem seal issues on 4.0L I6, oil filter adapter O-ring leaks. Common Problems Transmission: Overheating, torque converter shudder, internal seal failures (particularly in older transmissions). Common Problems Suspension Steering: Worn track bar bushings, ball joints, tie rod ends,...