🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Model Code: WJ Year: 2004 Codes Vin Prefix: 1J4 👋 Introduction Market Position Vehicle Segment: Mid-size SUV Brand Perception: Capability, Off-road Prowess, Comfort Competitive Analysis Key Competitors: Ford Explorer, Toyota 4Runner, Chevrolet Blazer, Nissan Pathfinder Key Features Distinctive Features: Quadra-Drive II 4x4 System (optional), Luxury Interior Appointments Platform: WJ Platform (shared with Mercedes-Benz M-Class) 📋 Manual Details Coverage Areas Primary Coverage: Parts Catalog Secondary Coverage: Component identification and assembly diagrams Page Count Estimated Page Count: Approx. 1500+ Manual Type Type: Parts Catalog Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Engine, Transmission, Transfer Case, Drivetrain Components Chassis: Suspension (Front & Rear), Steering, Brakes, Wheels & Tires Electrical: Wiring Harnesses, Lighting, Accessories, Control Modules (ECU, TCM, BCM) Body: Exterior Panels, Interior Trim, Seats, Doors, Glass, Body Hardware Climate Control: HVAC System Components Fuel: Fuel Tank, Lines, Pump, Injectors Exhaust: Exhaust Manifolds, Catalytic Converter, Muffler, Pipes Cooling: Radiator, Water Pump, Hoses, Thermostat Procedures Included Identification: Part Number Identification, Supersession Information Assembly: Detailed Exploded Views of Component Assemblies Replacement: Component Identification for Replacement Purposes Technical Depth Depth: Component Level Identification and Interconnects Diagnostic Focus: Identification of faulty components for replacement 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable Text (OCR Dependent) Printability: Printable Print Quality Image Resolution: High-Resolution Diagrams Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: ENH (4.0L Inline-6) Engine Displacement Liters: 4.0 Engine Configuration: Inline 6-Cylinder Engine Type: Overhead Valve (OHV) Horsepower Hp: 195 Torque Lb Ft: 230 Fuel System Fuel Delivery: Multi-Point Fuel Injection (MPI) Fuel Type: Unleaded Gasoline Alternative Engine Engine Code Alternative: ERH (4.7L V8) Engine Displacement Liters Alternative: 4.7 Engine Configuration Alternative: V8 Engine Type Alternative: Overhead Valve (OHV) Horsepower Hp Alternative: 235 Torque Lb Ft Alternative: 325 🔧 Transmission Standard Transmission Type Standard: 4-Speed Automatic (42RE) Optional Transmission Type Optional: 5-Speed Automatic (722.6 / NAG1 for 4.7L V8) Features Transfer Case: Command-Trac NV242 (Standard), Selec-Trac NV247 (Optional), Quadra-Drive II NV247 with Vari-Lok Differentials (Optional) 📐 Dimensions Exterior Length Inches: 181.5 Width Inches: 73.3 Height Inches: 67.7 Wheelbase Inches: 109.0 Ground Clearance Inches: 8.3 Weights Curb Weight Lbs Approx: 4300 - 4600 Towing Capacity Lbs Max: 5000 - 6500 (Varies by engine and equipment) 🛡️ Safety Features Ratings NHTSA Rollover Rating 40Mph: 4 out of 5 stars Active Features ABS: Standard (4-Wheel Disc) Traction Control: Optional (All-Speed Traction Control) Electronic Stability: Optional (ESP - Electronic Stability Program) Passive Features Airbags: Front Airbags, Optional Side Curtain Airbags 💡 Technology Features Infotainment Infotainment System: Optional premium audio systems, CD players, Cassette players (early models) Driver Assistance Cruise Control: Standard Parking Sensors: Optional Rear Park Assist Connectivity Connectivity Options: Limited by modern standards; mostly focused on audio input via CD/Cassette. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles (check owner's manual for specific type and synthetic oil recommendations) Engine Coolant Flush: Every 30,000 miles or 2 years Transmission Fluid Change: Every 30,000-60,000 miles (depending on driving conditions and fluid type) Fluid Specifications Engine Oil Specification: API SN/SP, ILSAC GF-6A SAE 5W-30 (for 4.0L), SAE 5W-30 or 5W-20 (for 4.7L, check label) Transmission Fluid Specification: ATF+4 (for 42RE), Mopar NAG1 Fluid (for 722.6/NAG1) Coolant Specification: Chrysler HOAT (Hybrid Organic Additive Technology) Blue 50/50 mix Known Issues Common Failures: Cooling system leaks (radiator, water pump, hoses), Transfer case chain stretch/wear (NV247), Blend door actuator failure, Front suspension components (ball joints, tie rods), Valve cover gasket leaks, Minor oil leaks (rear main seal, oil pan gasket) Electrical Concerns: Headlight switch failure, Power window motor issues, PCM (Powertrain Control Module) issues Part Number Examples Oil Filter Part Number: Mopar: MO-098, Fram: PH373 or CH373, Wix: 57356 Air Filter Part Number: Mopar: 53017809, Fram: CA8795, Wix: 42260 📚 Vehicle History Brand Heritage Brand History: Jeep, a division of Chrysler, has a long heritage in rugged, off-road capable vehicles dating back to WWII. Model Evolution Wj Generation Years: 1999-2004 Wj Redesign Notes: The WJ generation introduced a unibody construction for improved on-road manners and a more refined interior, moving away from the previous Grand Cherokee's body-on-frame design. It also shared its platform with Mercedes-Benz. Production Manufacturing Location: Jefferson North Assembly Plant, Detroit, Michigan, USA 🏆 Awards & Recognition Recognitions Significant Awards: Jeep Grand Cherokee models, including the WJ generation, have historically received accolades for off-road capability and towing prowess. Ratings Vehicle Reliability Index: Varies by year and specific components, often rated as average to above average for its class in its era.