🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Generation Generation Code: WJ Production Years: 1999-2004 Codes Chassis Code: WJ 👋 Introduction Market Position Segment: Mid-size Luxury SUV Target Audience: Owners seeking in-depth knowledge for DIY maintenance and repairs, professional mechanics, and Jeep enthusiasts. Competitive Analysis Competitors 1987-2000: Ford Explorer, Chevrolet Blazer/TrailBlazer, Toyota 4Runner, Nissan Pathfinder, Dodge Durango. Key Features Unique Selling Points Vehicle: Renowned Jeep off-road capability, comfortable ride for its class, availability of a robust V8 engine, luxurious interior appointments for the era. Unique Selling Points Manual: Authoritative source mirroring dealer information, comprehensive coverage of two major engine options and multiple drivetrain configurations, detailed diagnostic procedures for complex systems. 📋 Manual Details Coverage Areas Covered Years: 1987-2000 Regions Covered: North America (primarily) Page Count Estimated Page Count: ~2500+ Manual Type Type: Factory Service Manual (FSM) Language Language: English Format Format: Digital (PDF) / Print (likely) File Format Quality: High-resolution, searchable PDF with clear diagrams and text. Print Quality: Professionally printed on durable paper (if physical version). Binding Type: Perfect bound or spiral bound for lay-flat usability (if physical version). Paper Type: High-quality, matte finish paper to minimize glare (if physical version). 📖 Manual Coverage Systems Covered Powertrain: Engine (4.0L I6, 4.7L V8), Transmission (42RE, 45RFE/545RFE), Transfer Case (NV231, NV247), Differentials (Front & Rear Axles) Chassis: Suspension (Front & Rear), Steering System, Brakes (Front & Rear), Driveline (Driveshafts, CV Joints) Electrical: Engine Control Module (ECM), Powertrain Control Module (PCM), Body Control Module (BCM), Lighting, Instrumentation, Audio System, Power Accessories (Windows, Locks, Seats), HVAC Controls, ABS/Traction Control Systems, Airbag Systems Body: Body & Trim, Doors, Hood, Tailgate, Bumpers, Glass, Upholstery, Exterior & Interior Components Procedures Included Maintenance: Oil Changes, Filter Replacements, Fluid Checks & Top-offs, Tire Rotation, Brake Pad Replacement, Spark Plug Service, Battery Service Repair: Engine Component Rebuilds, Transmission Overhaul, Suspension & Steering Component Replacement, Brake System Repairs, Electrical Component Diagnosis & Replacement, Body Panel Repair & Replacement Diagnostics: Troubleshooting Flowcharts, Diagnostic Trouble Codes (DTCs), Wiring Diagrams, Component Testing Procedures, Scan Tool Data Interpretation Technical Depth Depth: Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and specifications. Wiring Diagrams: Included (detailed schematics for all major systems) ⚙️ Engine Specifications Primary Engine Engine 1 Variant: 4.0L Inline-6 (242 ci) 'Power Tech' Engine 1 Horsepower Approx: 185-195 hp (varies slightly by year) Engine 1 Torque Approx: 220-235 lb-ft (varies slightly by year) Optional Engine Engine 2 Variant: 4.7L V8 'Power Tech' Engine 2 Horsepower Approx: 220-235 hp (varies slightly by year) Engine 2 Torque Approx: 290-325 lb-ft (varies slightly by year) Performance Engine Management: Electronic Fuel Injection (EFI) Fuel System Fuel Type: Unleaded Gasoline Fuel Tank Capacity Gallons: 20.5 Engine Cooling Coolant Type Spec: Mopar Antifreeze/Coolant 10 Year/100,000 Mile Formula (or equivalent HOAT) 🔧 Transmission Standard Transmission Type Standard: 4-Speed Automatic (42RE for 4.0L I6, 45RFE/545RFE for 4.7L V8) Optional Transmission Type Optional: None (manual transmission not offered on WJ Grand Cherokee) Features Transmission Fluid Spec 42Re: ATF+3 (Chrysler Material Standard MS-9602) Transmission Fluid Spec 45Rfe 545Rfe: ATF+4 (Chrysler Material Standard MS-9602) Transfer Case Options: Selec-Trac (NV231 J) - Full-time 4WD, Quadra-Drive (NV247) - Full-time 4WD with electronic limited-slip differentials (LSD) 📐 Dimensions Exterior Wheelbase Inches: 116.0 Length Inches: 184.0 Width Inches: 75.0 Height Inches: 67.0 Weights Curb Weight Lbs Approx: 4200 - 4700 (depending on engine and options) 🛡️ Safety Features Ratings NHTSA Rollover Resistance Rating: 4/5 Star (model dependent) Active Features ABS: Standard (4-wheel disc brakes with ABS) Traction Control: Available/Optional (especially with Quadra-Drive) Passive Features Airbags Front: Standard (Driver and Passenger) Airbags Side: Available/Optional (Side Curtain Airbags, depending on trim/year) 💡 Technology Features Infotainment Audio System Options: AM/FM Cassette/CD Player, Premium Infinity Gold Sound System (optional) Navigation: Available (early factory navigation systems) Driver Assistance Cruise Control: Standard Parking Sensors: Not typically available on these models. Connectivity Aux Input: Not typically available; aftermarket solutions common. 🔧 Maintenance Service Intervals Oil Change Interval Miles: 3,000-7,500 miles (depending on oil type and driving conditions - consult manual for specifics) Transmission Fluid Change Interval Miles: 30,000-60,000 miles (depending on driving conditions - consult manual for specifics) Coolant Flush Interval Miles: 30,000-60,000 miles or 2-5 years Fluid Specifications Engine Oil Spec 4.0L: API Certified SAE 5W-30 (or 10W-30 in warmer climates) Engine Oil Spec 4.7L: API Certified SAE 5W-30 Power Steering Fluid Spec: Chrysler Power Steering Fluid (MS-5931) or equivalent Brake Fluid Spec: DOT 3 Known Issues Common Issues 4.0L: Cracked cylinder heads (later model heads are better), oil filter adapter housing leaks, starter motor issues. Common Issues 4.7L: Cooling system failures (water pump, radiator, hoses), intake manifold gasket leaks, valve guide wear. Common Issues Drivetrain: Transfer case chain stretch (NV247), driveshaft U-joint wear, differential seal leaks. Common Issues Electrical: Instrument cluster failures (especially odometer), HVAC blower motor resistor failure, various sensor failures (e.g., crankshaft position). 📚...