Segment:
Mid-size Luxury SUV
Target Audience:
Owners, Technicians, Parts Suppliers, Restoration Enthusiasts
Competitors 2003:
Ford Explorer, Chevrolet TrailBlazer, Toyota 4Runner, Nissan Pathfinder, Lincoln Aviator
Distinctive Features:
Quadra-Coil suspension, available Selec-Trac or Quadra-Drive 4WD systems, luxurious interior appointments.
For Business:
Essential for accurate parts identification and efficient inventory management for repair businesses.
For Owners:
Enables informed purchasing of replacement parts and understanding of vehicle componentry.
Powertrain:
Engine, Transmission, Drivetrain, Exhaust System Components
Chassis:
Suspension, Steering, Brakes, Wheels, Tires, Frame Components
Electrical:
Wiring Harnesses, Lighting, Accessories, Basic Electrical Components
Body:
Exterior Body Panels, Interior Trim, Glass, Doors, Bumpers
Identification:
Identification of correct replacement parts via diagrams and part numbers
Assembly:
Detailed exploded views of component assemblies
Ordering:
Facilitates accurate part ordering by providing specific part numbers
Depth:
Component-level detail with exploded diagrams and part numbers; does not include diagnostic or repair procedures.
Engine Code 2003:
4.7L V8 (PowerTech) and 4.0L Inline-6 (PowerTech)
Displacement V8:
4.7 Liters (287 cubic inches)
Horsepower V8:
Approximately 230-235 HP @ 4750 RPM (depending on specific tune)
Torque V8:
Approximately 320-325 lb-ft @ 3500 RPM (depending on specific tune)
Displacement I6:
4.0 Liters (242 cubic inches)
Horsepower I6:
Approximately 195 HP @ 4600 RPM
Torque I6:
Approximately 230 lb-ft @ 3200 RPM
Induction:
Sequential Multi-Port Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline
ECU Type:
Chrysler NGC (Next Generation Controller) or equivalent for 2003 models
Length:
Approx. 189.4 inches (4811 mm)
Width:
Approx. 73.7 inches (1872 mm)
Height:
Approx. 70.5 inches (1791 mm)
Wheelbase:
Approx. 116 inches (2949 mm)
Cargo Volume Behind Rear Seat:
Approx. 39.0 cubic feet (1104 liters)
Cargo Volume With Rear Seat Folded:
Approx. 70.5 cubic feet (1996 liters)
Curb Weight:
Approx. 4,400 - 4,700 lbs (2000 - 2130 kg), depending on engine and configuration
Towing Capacity:
Up to 5,000 lbs (2268 kg)
Payload Capacity:
Approx. 1,000 - 1,200 lbs (454 - 544 kg)
NHTSA Frontal Driver:
4 Stars (2003 model year assessment)
NHTSA Frontal Passenger:
4 Stars (2003 model year assessment)
IIHS Front Offset Crash Test:
Good (for 2002-2004 models, based on available data for similar period)
ABS:
Standard 4-wheel Anti-lock Braking System (ABS)
Traction Control:
Optional (part of Quadra-Drive system, or standalone on some trims)
Stability Control:
Not typically available on the 2003 WJ model.
Airbags Front:
Standard Dual Front Supplemental Airbag System
Airbags Side:
Optional Side Curtain Airbags (limited availability, may be more common on later models or specific trims)
Seatbelts:
3-point seatbelts with pretensioners for front occupants, 3-point belts for rear occupants.
Audio System:
Optional premium audio systems from Infinity or similar manufacturers, CD player, cassette player.
Navigation:
Optional factory navigation system (typically early generation DVD-based).
Cruise Control:
Standard cruise control system.
Parking Assist:
Optional rear parking assist sensors.
Phone Integration:
Limited, typically no integrated Bluetooth or smartphone connectivity; aftermarket solutions are common.
Oil Change Interval:
Typically every 3,000-7,500 miles (5,000-12,000 km) or 6 months, depending on oil type and driving conditions (consult manual for exact recommendation).
Transmission Service Interval:
Recommended every 30,000-60,000 miles (48,000-97,000 km) for fluid and filter change.
Coolant Change Interval:
Typically every 30,000-100,000 miles (48,000-161,000 km) or 2-5 years, depending on coolant type.
Engine Oil Specification:
SAE 5W-30 or SAE 10W-30 (depending on temperature), API Certified (e.g., API SN or equivalent)
Coolant Specification:
Mopar OAT (Organic Additive Technology) Antifreeze/Coolant (usually pink or orange)
Brake Fluid Specification:
DOT 3 or DOT 4
Cooling System:
Common issues include radiator leaks, heater core failures, and water pump leaks, especially the 4.7L V8.
Power Steering:
Leaking power steering lines and pumps are frequently reported.
Transmission Overheating:
The 45RFE/545RFE transmissions can be prone to overheating, especially under heavy towing; an auxiliary cooler is often recommended.
Cv Boots:
Torn CV (Constant Velocity) boots on the front axles can lead to premature joint failure, particularly in off-road or harsh conditions.
Ignition Coils:
Individual ignition coils on the 4.7L V8 can fail, leading to misfires.
Wheel Speed Sensors:
ABS and traction control issues often stem from failing wheel speed sensors.
Jeep Legacy:
Jeep has a long-standing heritage in off-road vehicles and SUVs, dating back to WWII Willys Jeeps.
Wj Generation:
The WJ Grand Cherokee was the second generation, produced from 1999 to 2004, representing a significant upgrade in refinement and technology over its ZJ predecessor.
Mid Cycle Refresh:
The 2003 model year typically features minor updates or package changes from the 2002 refresh, which included revised interior and exterior styling, and the introduction of the improved 4.7L HO engine option.
Production Location:
Jefferson North Assembly Plant, Detroit, Michigan, USA
Production Years Wj:
1999-2004
