🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Model Years Covered: 1999-2004 Trim Levels Covered: Sport, Overland, Laredo, Limited Generation Codes Platform: WJ/WG 👋 Introduction Market Position Positioning: Essential resource for owners and technicians working on the WJ/WG Grand Cherokee platform Competitive Analysis Value Proposition: Provides in-depth technical information typically found in OEM service manuals, offering significant cost savings for repairs and maintenance. Key Features Core Offering: Detailed procedures, specifications, and diagrams for all major vehicle systems. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive workshop service and repair Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Digital (likely PDF) 📖 Manual Coverage Systems Covered Engine: Yes (4.0L, 4.7L V8, 2.7L Turbodiesel) Transmission: Yes Drivetrain: Yes (4WD/AWD systems) Suspension: Yes Steering: Yes Brakes: Yes Electrical System: Yes (including wiring diagrams) HVAC: Yes Body And Chassis: Yes Interior: Yes Restraint Systems: Yes Diagnostics And Troubleshooting: Yes Procedures Included Routine Maintenance: Yes Major Repairs: Yes Component Rebuilds: Yes Disassembly And Reassembly: Yes Wiring Diagrams Interpretation: Yes Diagnostic Codes Interpretation: Yes Technical Depth Depth: Detailed workshop level, suitable for professional technicians and advanced DIY enthusiasts 📊 Manual Specifications File Format File Type: PDF (standard for this type of product) Print Quality Quality: High-resolution, printable pages with clear diagrams and text Binding Type Binding: N/A (Digital format) Paper Type Paper: N/A (Digital format) ⚙️ Engine Specifications Primary Engine 40L Engine Code: 231 (4.0L I6) Displacement: 3952 cc (242 cubic inches) Configuration: Inline 6-cylinder, Overhead Valve (OHV) Bore X Stroke: 3.875 in x 3.562 in (98.4 mm x 90.5 mm) Compression Ratio: 8.8:1 Fuel System: Sequential Multi-Port Fuel Injection (MPI) Primary Engine 47L Engine Code: 260 (4.7L V8) Displacement: 4701 cc (287 cubic inches) Configuration: V8, Single Overhead Camshaft (SOHC), 3 valves per cylinder Bore X Stroke: 3.72 in x 3.35 in (94.5 mm x 85.0 mm) Compression Ratio: 9.6:1 Fuel System: Sequential Multi-Port Fuel Injection (MPI) Primary Engine 27L Engine Code: ENF (2.7L CRD Turbodiesel) Displacement: 2685 cc (163.8 cubic inches) Configuration: Inline 5-cylinder, Turbocharged, Common Rail Diesel Injection (CRDI) Compression Ratio: 17.0:1 Fuel System: Common Rail Diesel Injection (CRDI) Performance 40L Horsepower: 190 hp @ 4450 rpm (approx.) 40L Torque: 235 lb-ft @ 3200 rpm (approx.) 47L Horsepower: 235 hp @ 4900 rpm (approx.) 47L Torque: 305 lb-ft @ 3450 rpm (approx.) 27L Horsepower: 140 hp @ 4000 rpm (approx.) 27L Torque: 250 lb-ft @ 1750 rpm (approx.) 🔧 Transmission Standard 40L Type: 42RE 4-speed Automatic Optional 47L Type: 45RFE 4-speed Automatic (later models might have 545RFE 5-speed) Standard 27L Type: 42LE 4-speed Automatic Features Transfer Case: Selec-Trac (NV242) or Quadra-Trac II (NV247) with various ratios 📐 Dimensions Exterior Length Length: 189.4 inches (4811 mm) Exterior Width Width: 74.0 inches (1880 mm) Exterior Height Height: 67.0 inches (1702 mm) Wheelbase Wheelbase: 116.0 inches (2946 mm) Weights Curb Weight: Approx. 4,300 - 4,800 lbs (1950 - 2177 kg) depending on engine and configuration 🛡️ Safety Features Ratings NHTSA Front Impact: 4-star driver, 4-star passenger (for models tested) IIHS Side Impact: Good (for models tested) Active Features ABS: Standard 4-wheel disc anti-lock braking system Traction Control: Available (Traction Control System - TCS) Passive Features Airbags: Standard front airbags, optional side airbags Rollover Protection: Available (Enhanced Accident Response System - EARS, rollover mitigation features) 💡 Technology Features Infotainment Available Systems: Factory AM/FM/CD, optional premium audio systems (Infinity), optional in-dash CD changer. Driver Assistance Features: Traction Control (TCS), optional Electronic Stability Program (ESP) introduced later in the generation. Connectivity Features: Limited by era; primarily analog systems, but some later models may have had basic auxiliary inputs. 🔧 Maintenance Service Intervals Oil Change Interval 40L 47L: Every 7,500 miles or 6 months (conventional oil), 10,000 miles or 6 months (synthetic oil). Interval 27L: Every 10,000 miles or 12 months (synthetic oil recommended). Service Intervals Transmission Fluid Interval Auto: Every 30,000 - 60,000 miles depending on usage and fluid type. Fluid Specifications Engine Oil Oil Spec 40L: API SP, SAE 10W-30 (or 5W-30 for colder climates) Oil Spec 47L: API SP, SAE 10W-30 (or 5W-30 for colder climates) Oil Spec 27L: ACEA C3, SAE 5W-30 Synthetic Diesel Oil Fluid Specifications Transmission Fluid Trans Fluid 42Re 45Rfe: Chrysler ATF+4 (or equivalent) Trans Fluid 42Le: Chrysler ATF+4 (or equivalent) Fluid Specifications Coolant Coolant Type: HOAT (Hybrid Organic Acid Technology) - Mopar OAT or equivalent Known Issues Common Problems: Heater core leaks, radiator issues, transmission solenoid issues, differential leaks, catalytic converter failure, power steering pump failure, various electrical gremlins. 📚 Vehicle History Brand Heritage Brand Legacy: Jeep has a long-standing reputation for off-road capability and ruggedness, dating back to WWII. Model Evolution Wj Generation Introduction: The WJ generation replaced the ZJ Grand Cherokee, introducing a more refined and luxurious SUV experience while retaining off-road prowess. Wg Variant: The WG designation is often used for the European market...