Segment:
Mid-size Luxury SUV
Key Competitors:
Ford Explorer, Chevrolet Blazer/TrailBlazer, Toyota 4Runner, Nissan Pathfinder, Land Rover Discovery
Distinguishing Attributes:
Renowned Jeep off-road capability, comfortable ride, spacious interior, available powerful V8 engine options, distinctive styling.
Primary Coverage:
Complete Service and Repair for Jeep Grand Cherokee WJ (1999-2004)
Estimated Page Count:
Over 2000 pages (typical for comprehensive manuals of this era)
Manual Classification:
Factory Service Manual / Workshop Manual
Digital Format:
PDF (Searchable, Printable)
Powertrain:
Engine, Fuel System, Ignition, Exhaust, Transmission (Automatic and Manual), Driveline
Chassis:
Suspension (Front & Rear), Steering, Brakes (ABS, Front & Rear)
Electrical:
Wiring Diagrams, Body Control Module (BCM), Powertrain Control Module (PCM), Lighting, HVAC Controls, Instrumentation, Audio Systems, Security Systems
Body And Trim:
Body Panels, Doors, Windows, Seats, Interior Trim, Exterior Trim, Glass
Maintenance:
Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks and Replacements, Tune-ups
Repair:
Component Disassembly/Reassembly, Diagnosis and Testing, Component Replacement, Rebuild Procedures
Troubleshooting:
Diagnostic Trouble Codes (DTCs), Symptom-Based Troubleshooting, Electrical Schematics Interpretation
Depth Of Information:
Comprehensive: From basic fluid changes to complete engine and transmission rebuilds, including detailed electrical diagnostics and wiring schematics.
Engine 1 Code And Type:
4.0L Inline-6 (PowerTech) - OHV 12-Valve
Engine 1 Displacement:
3952 cc (241 cubic inches)
Engine 1 Horsepower:
190-205 hp (depending on year)
Engine 1 Torque:
235-255 lb-ft (depending on year)
Engine 2 Code And Type:
4.7L V8 (PowerTech) - SOHC 16-Valve
Engine 2 Displacement:
4701 cc (287 cubic inches)
Engine 2 Horsepower:
220-235 hp (depending on year)
Engine 2 Torque:
285-312 lb-ft (depending on year)
Fuel Type:
Unleaded Gasoline
Induction Type:
Electronic Fuel Injection (EFI) / Multi-Port Fuel Injection (MPI)
ECU Type:
Chrysler NGC (Next Generation Controller) or similar variants
Transmission Type 40L Engine:
4-speed Automatic (42RE, 44RE, or 45RFE)
Transmission Type 47L Engine:
4-speed Automatic (44RE or 45RFE)
Manual Transmission Availability:
Rare, not widely offered on US models, primarily for export markets or specific trims (e.g., NV3550 5-speed manual).
Transfer Case Options:
Command-Trac (NV231 J), Selec-Trac (NV242 J), Quadra-Drive (NV247)
Automatic Transmission Fluid Type:
ATF+4 (Chrysler Material Specification MS-9602) or equivalent
Wheelbase:
116.1 inches (2949 mm)
Length:
184.6 inches (4689 mm)
Width:
73.5 inches (1867 mm)
Height:
67.0 inches (1702 mm)
Curb Weight Approx:
4200 - 4700 lbs (1905 - 2132 kg), varies by engine and trim
Cargo Volume Behind Rear Seat:
37.7 cubic feet (1067 liters)
Cargo Volume With Rear Seat Folded:
77.0 cubic feet (2180 liters)
NHTSA Front Impact Driver:
4 Stars (1999-2004 models)
NHTSA Front Impact Passenger:
4 Stars (1999-2004 models)
IIHS Side Impact Rating:
Acceptable (for models equipped with side airbags, if applicable)
ABS:
Standard on all models
Traction Control:
Optional or standard depending on trim and year (e.g., Electronic Traction Control)
Airbags:
Dual front airbags standard; optional side-impact airbags available on later models.
Audio System Options:
Factory AM/FM/CD, Cassette, Optional Infinity speaker systems, optional premium sound with subwoofer.
Navigation System:
Optional factory navigation system available on higher trims from around 2002 onwards.
Parking Assist:
Optional rear parking sensors available on some models.
Telematics:
Optional SiriusXM Satellite Radio, Uconnect Hands-Free communication system (introduced late in the generation, more common on later Chrysler vehicles).
Oil Change Interval:
Every 5,000 - 7,500 miles (8,000 - 12,000 km) or 6 months, depending on driving conditions and oil type used.
Transmission Fluid Change Interval:
Every 30,000 - 60,000 miles (48,000 - 96,000 km) or as per severe service schedule.
Coolant Flush Interval:
Every 30,000 - 50,000 miles (48,000 - 80,000 km) or 2-3 years.
Engine Oil Specification:
API SJ or higher, SAE 5W-30 or 5W-40 (check owner's manual for specific recommendations based on temperature).
Coolant Type:
Chrysler HOAT (Hybrid Organic Additive Technology) or equivalent (e.g., Mopar 10 Year / 100,000 Mile Coolant).
Common Problems Engine:
Cracked cylinder heads on early 4.7L V8 models, valve stem seal issues on 4.0L I6, oil filter adapter O-ring leaks.
Common Problems Transmission:
Overheating, torque converter shudder, internal seal failures (particularly in older transmissions).
Common Problems Suspension Steering:
Worn track bar bushings, ball joints, tie rod ends, and sway bar links due to vehicle weight and off-road use. Death wobble can occur with worn front-end components.
Common Problems Electrical:
Faulty window regulators, HVAC blower motor resistor failure, ABS sensor failures, TIPM (Totally Integrated Power Module) issues on later models.
Jeep Legacy:
Founded on military heritage, Jeep is synonymous with off-road capability and ruggedness.
Wj Generation Introduction:
The WJ generation replaced the ZJ Grand Cherokee, introducing a more refined interior, improved aerodynamics, and new powertrain options. It marked a significant step up in comfort and features for the Grand Cherokee line.
Wj Mid-Cycle Refresh:
A minor refresh occurred around 2002/2003, with updates to styling (headlights, grille, bumpers) and interior features/materials.
Production Location:
Jefferson North Assembly, Detroit, Michigan, USA
Automotive Journal Awards:
Frequently appeared on 'Best Of' lists for SUVs by various automotive publications during its production run for its balance of capability and comfort.
Consumer Reports Ratings:
Varied significantly by year and specific components, often citing average to above-average reliability for the powertrain, but below average for some electrical and body components.
