🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Chassis Code: WG / WJ Model Years Covered: 2002, 2003 Codes Engine Codes 2 7 Diesel: VM Motori EXL (425 OHV) Engine Codes 4 0: AMC 242 (ID: 4.0L I6 Power-Tech) Engine Codes 4 7: Jeep PowerTech (ID: 4.7L V8 Magnum) 👋 Introduction Market Position Vehicle Segment: Mid-size/Full-size Sport Utility Vehicle (SUV) Brand Heritage: Jeep is renowned for its off-road prowess and durable vehicles, a legacy reinforced by the Grand Cherokee's blend of luxury and capability. Competitive Analysis Key Competitors: Ford Explorer, Chevrolet TrailBlazer, Toyota 4Runner, Nissan Pathfinder, Dodge Durango, Land Rover Discovery Key Features Vehicle Strengths: Off-road capability (Quadra-Trac II/Quadra-Drive II), comfortable ride, spacious interior, choice of powertrains including a robust V8 and a diesel option. Manual Value Proposition: Provides comprehensive, factory-accurate repair and maintenance information for DIY enthusiasts and professional mechanics, enabling cost-effective upkeep and accurate diagnostics. 📋 Manual Details Coverage Areas Primary Coverage: Complete Factory Service / Repair / Workshop Page Count Estimated Page Count: Likely exceeding 1500 pages (typical for complete factory service manuals of this era) Manual Type Manual Type: Factory Service Manual (FSM) / Workshop Manual Language Language: English Format Delivery Format: Digital Download (PDF inside ZIP archive) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, inspection, repair, overhaul for all listed engine variants (2.7 Diesel, 4.0L I6, 4.7L V8). Includes cylinder head, block, pistons, rings, crankshaft, camshaft, valve train, timing systems, oil pump, lubrication. Engine Electrical: Ignition system, fuel injection system (MPI), sensors (oxygen, MAP, crank position, cam position, etc.), starting system, charging system (alternator), engine control unit (ECU) diagnostics and wiring diagrams. Transmission Drivetrain: Automatic transmission (e.g., 42RE, 45RFE/48RE) and manual transmission (if applicable, though less common for this generation). Transfer case operation and repair, driveshafts, axles, CV joints. Brakes: Hydraulic brake system, ABS (Anti-lock Braking System) diagnostics and repair, brake fluid specifications, rotor and pad replacement, caliper service, parking brake system. Suspension Steering: Front and rear suspension components (control arms, ball joints, bushings, springs, shocks/struts), steering system (power steering pump, steering gear, tie rods), alignment specifications. Cooling Heating Ac: Radiator, cooling fan, water pump, thermostat, coolant specifications, heater core, A/C system (compressor, refrigerant, diagnosis). Fuel System: Fuel tank, fuel pump, fuel filter, fuel injectors, fuel pressure regulator, emissions control systems (catalytic converter, EVAP). Specifics for diesel fuel system as well. Electrical Body Control: Lighting systems (headlights, taillights, interior), power windows, power locks, mirrors, wipers, horn, body control modules (BCM), multiplex systems (if present), wiring diagrams for all circuits. Body Chassis: Body panel removal/installation, door mechanisms, interior trim, dashboard, seat mechanisms, body repair procedures, chassis structure, corrosion protection. Procedures Included Scheduled Maintenance: Oil change intervals, fluid flush and replacement schedules (coolant, brake fluid, transmission fluid, power steering fluid), filter replacement (oil, fuel, air, cabin), spark plug replacement, tire rotation and balancing. Diagnostic Troubleshooting: Systematic troubleshooting guides for common symptoms, diagnostic trouble codes (DTCs), wiring diagram interpretation for fault finding. Repair Overhaul: Detailed step-by-step instructions for component removal, repair, and reinstallation for virtually all vehicle systems. Includes engine rebuilds, transmission overhauls, suspension component replacement, brake system repairs. Component Replacement: Specific procedures for replacing common wear items and major components such as alternators, starters, fuel pumps, water pumps, radiators, clutch kits (if applicable), brake pads, rotors, suspension arms, steering racks. Electrical Diagnostics: Troubleshooting of electrical circuits, component testing, using multimeters and oscilloscopes, interpreting wiring diagrams, diagnosing sensor faults, starter and charging system issues. Technical Depth Depth Of Coverage: Comprehensive. Covers everything from basic fluid changes and filter replacements to complete engine and transmission rebuilds, complex electrical diagnostics, and body panel repairs. This is a factory-level document. 📊 Manual Specifications File Format File Format: PDF Print Quality Printability: Yes Zoom Functionality: Yes Manual Quality: Factory Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine 2 7 Diesel Engine Type: 2.7L Inline-4 Turbo Diesel Engine Code: VM Motori EXL (425 OHV) Displacement: 2700 cc Horsepower Est: ~163 hp @ 4000 rpm Torque Est: ~295 lb-ft @ 1800 rpm Fuel System: Common Rail Direct Injection (CRD) Primary Engine 4 0 Engine Type: 4.0L Inline-6 (I6) Engine Code: AMC 242 / Power-Tech Displacement: 3956 cc Horsepower Est: ~195 hp @ 4600 rpm Torque Est: ~230 lb-ft @ 3200 rpm Fuel System: Multi-Point Fuel Injection (MPI) Primary Engine 4 7 Engine Type: 4.7L V8 (Magnum) Engine Code: Jeep Power-Tech Displacement: 4701 cc Horsepower Est: ~235 hp @ 4700 rpm (standard), ~255 hp @ 4700 rpm (High Output) Torque Est: ~295 lb-ft @ 3200 rpm (standard), ~325 lb-ft @ 3800 rpm (High Output) Fuel System: Multi-Point Fuel Injection (MPI) 🔧 Transmission Standard Transmission Automatic Transmission: 4-speed automatic (e.g., 42RE for 4.0L, 45RFE/48RE for 4.7L and some 4.0L) Optional Transmission Manual Transmission: Less common, but a 5-speed manual (NV3550) might...