Target Audience:
        
        
            Jeep owners, independent repair shops, parts suppliers, restorers.
        
     
    
        
            Value Proposition:
        
        
            Enables accurate identification and sourcing of genuine or aftermarket parts for the 2003 Grand Cherokee WJ.
        
     
    
    
        
            Alternatives:
        
        
            Other parts lookup systems (e.g., online VIN decoders, dealer systems), generic repair manuals.
        
     
    
        
            Manual Advantage:
        
        
            Specificity of OEM part numbers and detailed, model-specific exploded diagrams.
        
     
    
    
        
            Unique Selling Point 1:
        
        
            Every part cataloged with OEM part number.
        
     
    
        
            Unique Selling Point 2:
        
        
            High-quality exploded diagrams for visual clarity.
        
     
    
        
            Unique Selling Point 3:
        
        
            Zoom capability for minute details.
        
     
    
    
        
            Type:
        
        
            Full-size luxury SUV / Mid-size luxury SUV.
        
     
    
        
            Jeep Positioning:
        
        
            Jeep's flagship model, offering enhanced comfort, features, and capability.
        
     
    
    
        
            Off Road Capability:
        
        
            Renowned Jeep off-road prowess, particularly with Quadra-Drive system.
        
     
    
        
            Interior Comfort:
        
        
            Luxurious interior appointments for its era, comfortable ride.
        
     
 
    
    
    
        
            All Components:
        
        
            Yes, comprehensive coverage of all factory-installed components.
        
     
    
        
            Assembly Disassembly:
        
        
            Focuses on part identification and interrelation, not detailed disassembly procedures.
        
     
    
        
            Electrical System:
        
        
            Identification of electrical components and their related parts.
        
     
    
        
            Powertrain:
        
        
            Engine, transmission, driveline components.
        
     
    
        
            Chassis:
        
        
            Suspension, steering, brake components.
        
     
    
        
            Body:
        
        
            Exterior and interior body panels, trim, glass, hardware.
        
     
    
    
        
            Estimated Pages:
        
        
            Likely over 800 pages, typical for a comprehensive factory parts catalog.
        
     
    
    
        
            Type:
        
        
            Factory Parts Catalog / Parts Manual
        
     
    
        
            Purpose:
        
        
            Parts identification, ordering, and cataloging for service and restoration.
        
     
    
    
        
            Primary Language:
        
        
            English
        
     
    
    
        
            Digital Format:
        
        
            Likely PDF (for ease of search and viewing exploded diagrams).
        
     
    
        
            Print Format:
        
        
            If sold as a physical product, typically bound paperback or comb-bound.
        
     
 
    
    
    
        
            Engine Assembly:
        
        
            Includes all internal and external engine components, gaskets, seals, fasteners.
        
     
    
        
            Cooling System:
        
        
            Radiator, hoses, water pump, thermostat, fan assembly parts.
        
     
    
        
            Fuel System:
        
        
            Fuel pump, injectors, lines, tank, filter components.
        
     
    
        
            Exhaust System:
        
        
            Manifolds, catalytic converters, mufflers, pipes, hangers.
        
     
    
        
            Drivetrain Front:
        
        
            CV axles, differentials, front suspension and steering linkage components.
        
     
    
        
            Drivetrain Rear:
        
        
            Rear axle housing, gears, shafts, bearings, rear suspension components.
        
     
    
        
            Transfer Case:
        
        
            Internal components, seals, housing for Selec-Trac or Quadra-Drive systems.
        
     
    
        
            Transmission Automatic:
        
        
            Components for 42RE, 45RFE, or 545RFE transmissions.
        
     
    
        
            Braking System:
        
        
            Calipers, rotors, pads, lines, master cylinder, ABS components.
        
     
    
        
            Suspension Front:
        
        
            Control arms, ball joints, bushings, springs, shocks.
        
     
    
        
            Suspension Rear:
        
        
            Control arms, track bar, springs, shocks, bushings.
        
     
    
        
            Steering System:
        
        
            Steering gear, tie rods, drag link, steering column components.
        
     
    
        
            Wheel And Tire:
        
        
            Wheels, lug nuts, tire pressure monitoring system (if equipped).
        
     
    
        
            Electrical Body:
        
        
            Wiring harnesses, lighting, switches, power accessories.
        
     
    
        
            HVAC System:
        
        
            Compressor, condenser, evaporator, heater core, blower motor, controls.
        
     
    
        
            Interior Trim:
        
        
            Dashboard components, door panels, seat parts, headliner components.
        
     
    
        
            Exterior Trim:
        
        
            Bumpers, grilles, fender flares, moldings, emblems.
        
     
    
        
            Glass And Seals:
        
        
            Windshield, side glass, rear glass, window regulators, seals.
        
     
    
        
            Fasteners And Hardware:
        
        
            Specific bolts, nuts, clips, and other hardware for various assemblies.
        
     
    
    
        
            Part Identification:
        
        
            Primary focus: detailed visual identification of every part with OEM numbers.
        
     
    
        
            Exploded Diagrams:
        
        
            Comprehensive exploded views illustrating assembly order and relationships.
        
     
    
        
            Part Number Lookup:
        
        
            Essential for sourcing correct replacement parts.
        
     
    
        
            Reassembly Guidance:
        
        
            Implied through exploded diagrams for correct part placement.
        
     
    
    
        
            Depth:
        
        
            Highly detailed for parts identification and assembly context. Not a diagnostic or repair manual.
        
     
    
        
            Diagnostic Procedures:
        
        
            None.
        
     
    
        
            Repair Instructions:
        
        
            None (focus is on part identification, not 'how-to' repair).
        
     
    
        
            Wiring Diagrams:
        
        
            Not typically included in parts catalogs; separate electrical manuals are needed.
        
     
 
    
    
    
        
            Digital Medium:
        
        
            PDF is standard for searchable text and high-resolution diagrams.
        
     
    
        
            Searchability:
        
        
            Excellent if text-based PDF (OCR'd or natively digital).
        
     
    
    
        
            Diagram Resolution:
        
        
            Designed for clear visibility, often with zoom capability in digital formats.
        
     
    
        
            Text Clarity:
        
        
            High, as it's based on OEM documentation.
        
     
    
    
        
            Physical Binding:
        
        
            Varies; could be comb-bound, stapled, or perfect bound for physical copies.
        
     
    
    
        
            Physical Paper:
        
        
            Typically quality paper stock, suitable for frequent reference.
        
     
    
    
        
            Accuracy Standard:
        
        
            Based on Original Equipment Manufacturer (OEM) data.
        
     
    
    
        
            Search Functionality:
        
        
            If PDF, allows searching by part name or number.
        
     
    
    
        
            Coverage Scope:
        
        
            Comprehensive for all factory parts, from smallest fastener to major assemblies.
        
     
 
    
    
    
        
            Engine Code:
        
        
            PowerTech 4.0L (High Output)
        
     
    
        
            Displacement:
        
        
            3952 cc (241 cu in)
        
     
    
        
            Configuration:
        
        
            Inline 6-cylinder, Overhead Valve (OHV)
        
     
    
        
            Horsepower:
        
        
            190 hp @ 4600 rpm
        
     
    
        
            Torque:
        
        
            235 lb-ft @ 3200 rpm
        
     
    
        
            Fuel System:
        
        
            Sequential Multi-Port Electronic Fuel Injection (MPI)
        
     
    
        
            Bore X Stroke:
        
        
            3.88 x 3.41 in (98.5 x 86.7 mm)
        
     
    
    
        
            Engine Management:
        
        
            Chrysler JTEC (or equivalent)
        
     
    
    
        
            Engine Code:
        
        
            PowerTech 4.7L V8 (High Output)
        
     
    
        
            Displacement:
        
        
            4701 cc (287 cu in)
        
     
    
        
            Configuration:
        
        
            V8, Overhead Valve (OHV), 90-degree bank angle
        
     
    
        
            Horsepower:
        
        
            235 hp @ 4750 rpm
        
     
    
        
            Torque:
        
        
            300 lb-ft @ 3200 rpm
        
     
    
        
            Fuel System:
        
        
            Sequential Multi-Port Electronic Fuel Injection (MPI)
        
     
    
        
            Bore X Stroke:
        
        
            3.72 x 3.38 in (94.5 x 85.8 mm)
        
     
    
    
        
            Engine Management:
        
        
            Chrysler NGC (Next Generation Controller)
        
     
 
    
    
    
        
            Type:
        
        
            42RE 4-Speed Automatic
        
     
    
    
    
    
    
    
        
            Fluid Type:
        
        
            ATF+4 (Chrysler Mopar Material Number 05013457AA)
        
     
    
    
        
            Type:
        
        
            45RFE / 545RFE 4-Speed Automatic (later 545RFE)
        
     
    
    
    
    
    
    
        
            Fluid Type:
        
        
            ATF+4 (Chrysler Mopar Material Number 05013457AA)
        
     
    
    
        
            Transfer Case 4.0L:
        
        
            NV231J (Command-Trac) - Part-time, 2-speed
        
     
    
        
            Transfer Case 4.7L:
        
        
            NV247 (Selec-Trac) - Full-time, 2-speed with electronic shift
        
     
    
        
            Transfer Case Optional:
        
        
            NV247 HD (Quadra-Drive) - Full-time, 2-speed with electronic traction control differentials
        
     
    
        
            Axle Ratios:
        
        
            Commonly 3.73 or 3.73 for both engines, depending on trim and options.
        
     
 
    
    
    
        
            Wheelbase:
        
        
            116.1 inches (2950 mm)
        
     
    
        
            Length:
        
        
            184.6 inches (4690 mm)
        
     
    
        
            Width:
        
        
            74.9 inches (1903 mm)
        
     
    
        
            Height:
        
        
            67.4 inches (1712 mm)
        
     
    
        
            Front Track:
        
        
            61.8 inches (1570 mm)
        
     
    
        
            Rear Track:
        
        
            61.6 inches (1565 mm)
        
     
    
        
            Ground Clearance:
        
        
            Approx. 8.7 inches (221 mm) depending on tire size and suspension.
        
     
    
    
        
            Passenger Volume:
        
        
            Approx. 105.4 cu ft (2984 L)
        
     
    
    
    
        
            Cargo Volume Behind 2Nd Row:
        
        
            37.0 cu ft (1047 L)
        
     
    
        
            Cargo Volume With 2Nd Row Folded:
        
        
            72.4 cu ft (2049 L)
        
     
    
    
        
            Curb Weight 4.0L:
        
        
            Approx. 4,350 lbs (1973 kg)
        
     
    
        
            Curb Weight 4.7L:
        
        
            Approx. 4,570 lbs (2073 kg)
        
     
    
        
            Gross Vehicle Weight Rating Gvwr:
        
        
            Approx. 5,800-6,000 lbs (2630-2722 kg) depending on configuration.
        
     
    
        
            Towing Capacity:
        
        
            Up to 5,000 lbs (2268 kg) with optional tow package.
        
     
    
        
            Payload Capacity:
        
        
            Approx. 800-1000 lbs (363-454 kg) depending on configuration.
        
     
    
    
        
            Wheel Bolt Pattern:
        
        
            5 x 114.3 mm (5 x 4.5 inches)
        
     
    
        
            Standard Tire Size 4.0L:
        
        
            P225/75R16
        
     
    
        
            Optional Tire Size 4.0L:
        
        
            P235/65R17
        
     
    
        
            Standard Tire Size 4.7L:
        
        
            P235/65R17
        
     
    
        
            Optional Tire Size 4.7L:
        
        
            P235/60R18
        
     
 
    
    
    
        
            NHTSA Front Impact Driver:
        
        
            Good (for 2002-2004 models tested)
        
     
    
        
            NHTSA Front Impact Passenger:
        
        
            Good (for 2002-2004 models tested)
        
     
    
        
            NHTSA Side Impact Driver:
        
        
            Acceptable (for 2002-2004 models tested)
        
     
    
        
            NHTSA Side Impact Passenger:
        
        
            Acceptable (for 2002-2004 models tested)
        
     
    
        
            IIHS Frontal Offset:
        
        
            Good (for 2002-2004 models tested)
        
     
    
    
        
            ABS:
        
        
            Standard (4-wheel disc with ABS)
        
     
    
        
            Traction Control:
        
        
            Available (especially with Quadra-Drive)
        
     
    
        
            Electronic Stability Control:
        
        
            Not commonly available or standard on the 2003 WJ.
        
     
    
    
        
            Airbags Front:
        
        
            Driver and front passenger airbags standard.
        
     
    
        
            Airbags Side:
        
        
            Optional front seat-mounted side airbags.
        
     
    
        
            Seatbelts:
        
        
            3-point front and rear seatbelts.
        
     
    
        
            Rollover Protection:
        
        
            Built into the unibody structure.
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Every 3,000-5,000 miles or 6 months (check manual for specific oil type).
        
     
    
        
            Engine Air Filter:
        
        
            Replace every 15,000-30,000 miles or as needed based on driving conditions.
        
     
    
        
            Cabin Air Filter:
        
        
            Replace every 15,000-20,000 miles.
        
     
    
        
            Transmission Fluid Change:
        
        
            Inspect every 30,000 miles, replace fluid and filter around 50,000-60,000 miles, or more frequently under severe use.
        
     
    
        
            Coolant Flush:
        
        
            Replace coolant every 30,000-50,000 miles or 3-5 years.
        
     
    
        
            Spark Plugs:
        
        
            Platinum or Iridium plugs: 100,000 miles (for 4.7L); Copper plugs (for 4.0L): 30,000 miles.
        
     
    
        
            Brake Fluid Flush:
        
        
            Replace every 2-3 years or 45,000 miles.
        
     
    
    
        
            Engine Oil 4.0L:
        
        
            SAE 10W-30, API SN or equivalent. Capacity: 5 quarts (4.7L) with filter.
        
     
    
        
            Engine Oil 4.7L:
        
        
            SAE 5W-30, API SN or equivalent. Capacity: 6 quarts (5.7L) with filter.
        
     
    
        
            Coolant:
        
        
            Mopar Antifreeze/Coolant HOAT (50/50 mix with distilled water). Capacity: ~11 quarts (10.4L).
        
     
    
        
            Power Steering Fluid:
        
        
            Mopar Power Steering Fluid (MS-5901) or equivalent.
        
     
    
    
    
        
            Common Issue 1:
        
        
            Heater Treater (blend door actuator failure in HVAC system).
        
     
    
        
            Common Issue 2:
        
        
            Cracked cylinder heads on the 4.7L V8 (especially earlier models).
        
     
    
        
            Common Issue 3:
        
        
            Water pump leaks (often replaced with serpentine belt).
        
     
    
        
            Common Issue 4:
        
        
            Transfer case chain stretch or wear (especially on Quadra-Drive systems).
        
     
    
        
            Common Issue 5:
        
        
            Front suspension wear (ball joints, tie rods, control arm bushings).
        
     
    
        
            Common Issue 6:
        
        
            Rear main seal leaks.
        
     
    
        
            Common Issue 7:
        
        
            Transmission cooler line leaks or internal transmission issues.
        
     
 
    
    
    
        
            Jeep Legacy:
        
        
            Founded on robust off-road capabilities and iconic design, dating back to WWII Willy's Jeep.
        
     
    
    
        
            Grand Cherokee Introduction:
        
        
            First introduced in 1993 as a more luxurious alternative to the Cherokee XJ.
        
     
    
        
            Wj Generation:
        
        
            Second generation Grand Cherokee, produced from 1999 to 2004.
        
     
    
        
            Wj Facelift:
        
        
            Received a significant refresh for the 2002 model year, including updated styling and powertrains.
        
     
    
        
            2003 Updates:
        
        
            Minor refinements; the 4.7L V8 received a power increase and the 545RFE transmission became more prevalent.
        
     
    
    
        
            Manufacturing Location:
        
        
            Jefferson North Assembly Plant, Detroit, Michigan, USA.
        
     
    
        
            Production Years:
        
        
            1999-2004 model years.
        
     
    
        
            Market Segment:
        
        
            Mid-size luxury SUV.