🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Year: 1999 Codes Internal Model Code: WJ 👋 Introduction Market Position Vehicle Segment: Mid-size SUV Key Competitors: Ford Explorer, Toyota 4Runner, Chevrolet Blazer, Nissan Pathfinder Competitive Analysis Distinguishing Factors: Strong off-road capability, comfortable ride, spacious interior, availability of powerful V8 engines. Key Features Platform: WJ platform, shared with Mercedes-Benz ML. Chassis: Unibody construction with integrated body-frame (IBF) for improved rigidity and handling. 📋 Manual Details Coverage Areas Primary Focus: Repair and Service Page Count Estimated Pages: 1000+ Manual Type Type: Factory Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, assembly, disassembly, timing, lubrication, cooling, fuel, emission controls Engine Performance: Diagnosis and testing of engine performance issues Transmission Automatic: 42RE, 44RE, 45RFE: overhaul, diagnosis, service, torque converter Transmission Manual: NV3500: overhaul, diagnosis, service Drivetrain 4X4: NV242, NV247 transfer cases, front/rear drive shafts, axles, differentials, CV joints Brakes: Front/rear brake systems, ABS, hydraulic components, parking brake Suspension: Front/rear suspension, control arms, springs, shock absorbers, steering linkage Steering: Power steering system, steering column, steering gear/rack Electrical System: Battery, charging system, starting system, ignition system, lighting Body And Frame: Body panel repair, structural components, doors, hood, tailgate, interior trim HVAC: Heating, ventilation, air conditioning system diagnosis and repair Restraints: Airbag system diagnosis and service Diagnostics: On-Board Diagnostics (OBD-II), DTCs, wiring diagrams, troubleshooting charts Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, tire rotations Component Replacement: Detailed instructions for replacing major and minor components Engine Rebuild: Complete engine overhaul procedures Transmission Rebuild: Detailed steps for automatic and manual transmission rebuilds Troubleshooting: Step-by-step diagnostic procedures for common and complex issues Electrical Diagnosis: Wiring diagrams, testing procedures for circuits and components Body Repair: Panel alignment, rust repair, trim removal/installation Technical Depth Depth: Comprehensive: Covers basic maintenance to full engine/transmission rebuilds and complex electrical diagnostics. 📊 Manual Specifications File Format File Type: Searchable PDF Print Quality Quality: High-resolution scans with clear diagrams and text Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Option 1: 4.0L Inline-6 (242ci) 'Power Tech' I6 Engine Option 2: 4.7L V8 (285ci) 'PowerTech' V8 Performance 4.0L Horsepower 4.0L: 185 hp @ 4,600 rpm Torque 4.0L: 235 lb-ft @ 3,200 rpm Performance 4.7L Horsepower 4.7L: 220 hp @ 4,400 rpm Torque 4.7L: 300 lb-ft @ 3,200 rpm Fuel System Fuel Delivery 4.0L: Multi-point Fuel Injection (MPI) Fuel Delivery 4.7L: Multi-point Fuel Injection (MPI) Emission Controls Emission System: Catalytic converter, EGR system, O2 sensors Engine Codes 4.0L Engine Code: ERH 4.7L Engine Code: A8B (early), N/A (later) 🔧 Transmission Standard Transmission 4.0L Transmission Type 4.0L: 42RE 4-speed Automatic Optional Transmission 4.0L Transmission Type Manual 4.0L: NV3500 5-speed Manual Standard Transmission 4.7L Transmission Type 4.7L: 45RFE 4-speed Automatic (later revised to 5-speed) Features Transfer Case Options: Selec-Trac (NV242) - full-time 4WD; Quadra-Trac II (NV247) - full-time 4WD with electronic control. Fluid Specifications 42Re Fluid Type: ATF+4 (MS-9602) 45Rfe Fluid Type: ATF+4 (MS-9602) 📐 Dimensions Exterior Length: 189.8 inches Width: 73.3 inches Height: 67.9 inches Wheelbase: 116.0 inches Weights Curb Weight 4.0L: 4,453 lbs Curb Weight 4.7L: 4,614 lbs Cargo Cargo Volume Behind Second Row: 37.2 cubic feet Cargo Volume Max: 77.0 cubic feet 🛡️ Safety Features Ratings NHTSA Rollover Resistance: 4 out of 5 stars (likely for higher trims) Active Features ABS: Standard 4-wheel disc brakes with ABS Traction Control: Available Passive Features Airbags: Driver and front passenger airbags Seatbelts: 3-point seat belts with pretensioners 💡 Technology Features Infotainment Audio System: Optional Infinity Gold premium sound system, CD player, cassette player Driver Assistance Cruise Control: Standard Auto Headlights: Available Connectivity Connectivity Features: Limited by era; basic power outlets. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 - 5,000 miles or 3-6 months, depending on driving conditions. Transmission Service Interval: Every 30,000 - 60,000 miles, depending on use. Coolant Flush Interval: Every 30,000 - 50,000 miles. Fluid Specifications Engine Oil 4.0L: 10W-30 (API Service SG or higher) Engine Oil 4.7L: 5W-30 (API Service SG or higher) Coolant Type: Chrysler HOAT (Hybrid Organic Additive Technology) coolant (typically pink or orange) Fluid Capacities Engine Oil Capacity 4.0L: 6 quarts (with filter) Engine Oil Capacity 4.7L: 7 quarts (with filter) Known Issues Common Issues List: Head gasket leaks (especially 4.7L V8), cooling system failures (plastic components), death wobble (steering/suspension alignment issues), transfer case issues (NV247), interior electrical gremlins, starter motor issues. Filter Part Numbers Oil Filter 4.0L: Mopar: MO-090, Wix: 51515 Oil Filter 4.7L: Mopar: MO-090, Wix: 51515 📚 Vehicle History Brand Heritage Jeep Legacy: Long history of robust, go-anywhere SUVs, starting with the original Willys Jeep. Model Evolution Zj To Wj Transition: Replaced the ZJ generation. The WJ introduced a significant redesign with improved aerodynamics, a more refined interior, and enhanced on-road manners, while retaining strong off-road capabilities....