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.