Vehicle Class:
Mid-size SUV
Target Audience:
Enthusiasts, professional mechanics, DIY owners seeking in-depth repair and maintenance knowledge.
Key Competitors:
Ford Explorer, Chevrolet Blazer, Toyota 4Runner, Nissan Pathfinder
Vehicle Design Philosophy:
Comfortable on-road manners with significant off-road capability, leveraging Jeep's heritage.
Manual Value Proposition:
Provides factory-accurate procedures and specifications essential for maintaining and repairing the WJ Grand Cherokee to original standards.
Powertrain:
Engine (4.0L I6, 4.7L V8), Transmission (42RE, 45RFE/545RFE, NV242/NV247 transfer cases)
Chassis:
Suspension (Front: Solid Beam Axle with Coil Springs; Rear: Solid Beam Axle with Coil Springs), Steering (Hydraulic Power Steering), Brakes (Front: Ventilated Discs; Rear: Solid Discs, ABS)
Electrical:
Battery, Starting Systems, Charging System, Ignition System, Instrument Panel, Audio Systems, Horn, Speed Control, Turn Signal/Hazard, Wiper/Washer, Lamps, Passive Restraint Systems, Electrically Heated Systems, Power Distribution, Power Locks, Vehicle Theft/Security, Power Seats, Power Windows, Power Mirrors, Chime/Buzzer Warning, Overhead Console, Wiring Diagrams
Body:
Body Structure, Frame and Bumpers, Doors, Hood, Liftgate, Glass, Interior Trim, Exterior Trim
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) System
Emissions:
Emission Control Systems
Maintenance:
Scheduled maintenance, fluid checks and changes, filter replacements, lubrication points.
Troubleshooting:
Diagnostic procedures, symptom-based troubleshooting guides for various systems.
Repair:
Step-by-step repair instructions for all major mechanical and electrical components, including disassembly, assembly, and adjustments.
Diagnostics:
Component testing, electrical system diagnostics, engine performance diagnostics, ABS and SRS system diagnostics.
Specifications:
Torque specifications, clearances, fluid capacities, electrical values, diagnostic trouble codes (DTCs).
Depth Level:
Comprehensive Factory Level
Content Detail:
Detailed component removal and installation, system overhaul, specialized tool usage, diagnostic flowcharts.
Engine 1 Code:
4.0L Inline-6 (PowerTech)
Engine 1 Displacement:
3952 cc (241 cu in)
Engine 1 Horsepower:
190 hp @ 4600 rpm
Engine 1 Torque:
235 lb-ft @ 3200 rpm
Engine 1 Fuel System:
Sequential Multi-Port Fuel Injection (MPI)
Engine 1 Block Material:
Cast Iron
Engine 1 Head Material:
Aluminum
Engine 1 Valvetrain:
Overhead Valve (OHV), 12 valves
Engine 2 Code:
4.7L V8 (PowerTech)
Engine 2 Displacement:
4701 cc (287 cu in)
Engine 2 Horsepower:
235 hp @ 4500 rpm
Engine 2 Torque:
325 lb-ft @ 3200 rpm
Engine 2 Fuel System:
Sequential Multi-Port Fuel Injection (MPI)
Engine 2 Block Material:
Aluminum
Engine 2 Head Material:
Aluminum
Engine 2 Valvetrain:
Overhead Valve (OHV), 16 valves
Engine Governor Speed:
Electronically limited to 110 mph (177 km/h)
Transmission Type 40L:
4-Speed Automatic (42RE)
Transmission Type 47L:
4-Speed Automatic (45RFE, later 545RFE)
Transfer Case Options:
Selec-Trac (NV242) with full-time 2WD, 4WD High/Low; Quadra-Drive (NV247) with full-time 4WD, Vari-Lok axles.
Automatic Transmission Fluid Spec 42Re:
ATF+4 (Mopar P/N 05013457AA)
Automatic Transmission Fluid Spec 45Rfe 545Rfe:
ATF+4 (Mopar P/N 05013457AA)
Transfer Case Fluid Nv242:
Mopar NP-242 Transfer Case Fluid (P/N 04750258AA) or equivalent.
Transfer Case Fluid Nv247:
Mopar NV-247 Transfer Case Fluid (P/N 05010065AA) or equivalent.
NHTSA Rollover Resistance:
3/5 Stars (early models), improved with later updates.
ABS:
Standard on all models (Anti-lock Braking System).
Airbags:
Standard dual front airbags. Optional side-impact airbags available on some trims.
Oil Change Interval:
Every 5,000 to 7,500 miles (8,000 to 12,000 km) or 6 months, depending on driving conditions and oil type used.
Transmission Fluid Change:
Every 30,000 to 60,000 miles (48,000 to 97,000 km) or 3 years, depending on towing and severe usage.
Coolant Flush:
Every 30,000 miles (48,000 km) or 2 years, using Mopar OAT (Organic Acid Technology) coolant.
Engine Oil Spec 40L:
SAE 10W-30 API SG or higher (check owner's manual for specific viscosity). Mopar recommends 10W-30.
Engine Oil Spec 47L:
SAE 5W-30 API SG or higher (check owner's manual for specific viscosity). Mopar recommends 5W-30.
Engine Coolant Spec:
Mopar OAT (Organic Acid Technology) Antifreeze/Coolant (P/N 05010365AA) or equivalent HOAT.
Power Steering Fluid Spec:
Mopar Power Steering Fluid (P/N 05142892AA) or ATF+4 is often acceptable; consult manual.
Common Problems Engine 40L:
Cracked cylinder heads (less common than earlier engines but possible), oil filter adapter housing leaks, rear main seal leaks.
Common Problems Engine 47L:
Valve seal issues (can cause oil consumption), intake manifold gasket leaks, oil filter adapter housing leaks, camshaft/crankshaft position sensor failures.
Common Problems Transmission:
Torque converter clutch (TCC) shudder/failure, transmission fluid leaks, electronic solenoid pack issues.
Common Problems Suspension Steering:
Worn ball joints and tie rod ends, power steering pump whine/failure, Death Wobble (especially with lifted vehicles or worn components).
Common Problems Electrical:
HVAC blower motor resistor failure, instrument cluster gauge issues, Body Control Module (BCM) failures, window regulator failures.
Jeep Legacy:
Jeep is renowned for its off-road prowess and the Grand Cherokee WJ continued this tradition while enhancing luxury and on-road comfort.
Wj Generation Context:
The WJ generation (1999-2004) represented a significant redesign from the previous ZJ, featuring a longer wheelbase, more refined interior, and updated powertrains. It was built in Detroit, Michigan and Austria.
Production Years:
1999-2004
