Vehicle Class:
Mid-size Luxury/Performance SUV
Brand Perception:
Jeep's flagship SUV, emphasizing off-road capability and luxury for its era.
Key Competitors:
Ford Explorer, Chevrolet TrailBlazer, Toyota 4Runner, Land Rover Discovery, Lexus RX
Standout Attributes:
Robust platform, powerful engine options, significant towing capacity, available Quadra-Drive II system.
Manual Value Proposition:
Provides professional-level repair and maintenance knowledge, crucial for keeping this capable SUV in optimal condition.
Engine Mechanical:
Detailed diagnostics, repair, overhaul for all WJ Grand Cherokee engines (4.0L I6, 4.7L V8).
Engine Electrical:
Ignition system, fuel injection, sensors, actuators, ECU diagnostics, wiring diagrams.
Transmission Automatic:
Service, repair, overhaul of 42RE, 45RFE, 545RFE transmissions.
Transmission Manual:
Service and repair of NV3550 manual transmission (if equipped).
Drivetrain And Axles:
Front and rear axle service, differentials, NP231J, NP242J transfer cases.
Suspension:
Front and rear suspension systems, shocks, springs, control arms, steering linkage.
Brakes:
Front and rear brake systems (disc), ABS, parking brake.
Steering:
Power steering system, steering column, steering gear.
Cooling System:
Radiator, water pump, thermostat, cooling fan, HVAC integration.
Fuel System:
Fuel tank, pump, lines, injectors, evaporative emissions (EVAP).
Exhaust System:
Catalytic converter, mufflers, pipes, exhaust manifold.
Electrical System:
Battery, charging system, starting system, lighting, power accessories.
Body And Frame:
Body panel removal, interior trim, glass, seals, frame integrity checks.
HVAC:
Heating, Ventilation, and Air Conditioning system service and diagnostics.
Safety Systems:
Airbag system service, seat belts.
Routine Maintenance:
Oil changes, filter replacements, fluid checks and changes, tire rotations.
Troubleshooting Diagnostics:
Systematic fault diagnosis for all major vehicle components.
Component Repair Overhaul:
Step-by-step repair procedures for engines, transmissions, axles, etc.
Component Replacement:
Detailed instructions for replacing common wear items and major assemblies.
Torque Specifications:
Precise torque values for all critical fasteners.
Wiring Diagrams:
Comprehensive electrical schematics for all vehicle systems.
Special Tools:
Identification and usage instructions for any required specialized tools.
Depth Level:
Expert Level - Covers everything from basic maintenance to full engine and transmission rebuilds.
Diagnostic Capabilities:
Advanced diagnostic procedures, including pinpoint tests and scan tool data interpretation.
Rebuild Instructions:
Detailed instructions for disassembling, inspecting, and reassembling major components.
Engine Option 1:
4.0L Inline-6 (242 ci) OHV Power Tech
Engine Option 1 Power:
Approx. 190-205 hp @ 4400-4750 rpm
Engine Option 1 Torque:
Approx. 235-255 lb-ft @ 3000-3200 rpm
Engine Option 2:
4.7L V8 (285 ci) Magnum SOHC
Engine Option 2 Power:
Approx. 220-260 hp @ 4700-5000 rpm
Engine Option 2 Torque:
Approx. 280-330 lb-ft @ 3200-3500 rpm
Bore Stroke 4 0L:
3.88 in x 3.41 in
Bore Stroke 4 7L:
3.70 in x 3.27 in
Fuel Delivery 4 0L:
Sequential Multi-Port Fuel Injection (MPI)
Fuel Delivery 4 7L:
Sequential Multi-Port Fuel Injection (MPI)
Recommended Fuel:
87 Octane Regular Unleaded (premium recommended for optimal performance with 4.7L)
Automatic Transmission:
42RE (4-speed automatic with overdrive) for 4.0L; 45RFE/545RFE (4-speed automatic with overdrive) for 4.7L.
Manual Transmission:
NV3550 (5-speed manual) - Optional on some 4.0L models.
Overdrive Gears:
All automatics feature overdrive (4th gear).
Transfer Cases:
Selec-Trac (NV242J), Quadra-Trac II (NV247), Quadra-Drive II (NV247 with Tru-Lok differentials).
Transmission Fluid Spec 42Re:
ATF+4 (MS-9602)
Transmission Fluid Spec 45Rfe 545Rfe:
ATF+4 (MS-9602)
Wheelbase:
116.0 inches (2946 mm)
Length:
186.7 inches (4742 mm)
Width:
74.8 inches (1900 mm)
Height:
67.5 inches (1715 mm)
Ground Clearance:
Varies by model/suspension, typically 8.4-8.7 inches (213-221 mm)
Curb Weight:
4,400 - 4,900 lbs (2000 - 2220 kg) depending on configuration
Gross Vehicle Weight Rating Gvwr:
5,800 - 6,400 lbs (2630 - 2903 kg)
Towing Capacity:
Up to 7,500 lbs (3400 kg) with proper equipment
NHTSA Rollover Resistance:
3-Star (as per 2001 model year testing)
IIHS Offset Frontal Impact:
'Acceptable' to 'Good' depending on specific model year and equipment.
Traction Control:
Available, often linked to ABS system.
Antilock Brakes ABS:
Standard on most models, 4-wheel disc ABS.
Airbags:
Driver and front passenger airbags.
Seatbelts:
Three-point seatbelts with pretensioners.
Oil Change Interval:
Every 3,000-7,500 miles (5,000-12,000 km) or 6-12 months, depending on oil type and driving conditions (refer to manual for specifics).
Transmission Fluid Change Interval:
Every 30,000-60,000 miles (50,000-100,000 km), depending on usage.
Coolant Change Interval:
Every 30,000-100,000 miles (50,000-160,000 km), depending on coolant type (typically longer life for modern coolants).
Engine Oil 4 0L:
API SN/SP, SAE 5W-30 (check owner's manual for current recommendations)
Engine Oil 4 7L:
API SN/SP, SAE 5W-30 or 5W-20 (check owner's manual for current recommendations)
Engine Coolant:
Mopar HOAT (Hybrid Organic Acid Technology) coolant or equivalent (e.g., Pentofrost G12/G12+).
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Common Problems:
Cracked cylinder heads (4.7L early models), death wobble (suspension/steering linkage wear), power steering pump issues, HVAC blower motor resistor failure, automatic transmission solenoid issues.
Maintenance Recommendations For Issues:
Regular inspection of steering and suspension components, proactive replacement of known weak points, proper fluid maintenance.
Jeep Legacy:
Jeep has a storied history dating back to World War II, known for robust off-road vehicles.
Previous Generation:
Jeep Grand Cherokee ZJ (1993-1998)
Next Generation:
Jeep Grand Cherokee WK (2005-2010)
Model Years Covered:
1999-2004 (WJ Generation)
Manufacturing Location:
Detroit, Michigan, USA; Brampton, Ontario, Canada