Vehicle Segment:
Mid-size SUV
Brand Perception:
Capability, Off-road Prowess, Comfort
Key Competitors:
Ford Explorer, Toyota 4Runner, Chevrolet Blazer, Nissan Pathfinder
Distinctive Features:
Quadra-Drive II 4x4 System (optional), Luxury Interior Appointments
Platform:
WJ Platform (shared with Mercedes-Benz M-Class)
Powertrain:
Engine, Transmission, Transfer Case, Drivetrain Components
Chassis:
Suspension (Front & Rear), Steering, Brakes, Wheels & Tires
Electrical:
Wiring Harnesses, Lighting, Accessories, Control Modules (ECU, TCM, BCM)
Body:
Exterior Panels, Interior Trim, Seats, Doors, Glass, Body Hardware
Climate Control:
HVAC System Components
Fuel:
Fuel Tank, Lines, Pump, Injectors
Exhaust:
Exhaust Manifolds, Catalytic Converter, Muffler, Pipes
Cooling:
Radiator, Water Pump, Hoses, Thermostat
Identification:
Part Number Identification, Supersession Information
Assembly:
Detailed Exploded Views of Component Assemblies
Replacement:
Component Identification for Replacement Purposes
Depth:
Component Level Identification and Interconnects
Diagnostic Focus:
Identification of faulty components for replacement
Engine Code:
ENH (4.0L Inline-6)
Engine Displacement Liters:
4.0
Engine Configuration:
Inline 6-Cylinder
Engine Type:
Overhead Valve (OHV)
Fuel Delivery:
Multi-Point Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline
Engine Code Alternative:
ERH (4.7L V8)
Engine Displacement Liters Alternative:
4.7
Engine Configuration Alternative:
V8
Engine Type Alternative:
Overhead Valve (OHV)
Horsepower Hp Alternative:
235
Torque Lb Ft Alternative:
325
Transmission Type Standard:
4-Speed Automatic (42RE)
Transmission Type Optional:
5-Speed Automatic (722.6 / NAG1 for 4.7L V8)
Transfer Case:
Command-Trac NV242 (Standard), Selec-Trac NV247 (Optional), Quadra-Drive II NV247 with Vari-Lok Differentials (Optional)
NHTSA Rollover Rating 40Mph:
4 out of 5 stars
ABS:
Standard (4-Wheel Disc)
Traction Control:
Optional (All-Speed Traction Control)
Electronic Stability:
Optional (ESP - Electronic Stability Program)
Airbags:
Front Airbags, Optional Side Curtain Airbags
Oil Change Interval:
Every 3,000-5,000 miles (check owner's manual for specific type and synthetic oil recommendations)
Engine Coolant Flush:
Every 30,000 miles or 2 years
Transmission Fluid Change:
Every 30,000-60,000 miles (depending on driving conditions and fluid type)
Engine Oil Specification:
API SN/SP, ILSAC GF-6A SAE 5W-30 (for 4.0L), SAE 5W-30 or 5W-20 (for 4.7L, check label)
Transmission Fluid Specification:
ATF+4 (for 42RE), Mopar NAG1 Fluid (for 722.6/NAG1)
Coolant Specification:
Chrysler HOAT (Hybrid Organic Additive Technology) Blue 50/50 mix
Common Failures:
Cooling system leaks (radiator, water pump, hoses), Transfer case chain stretch/wear (NV247), Blend door actuator failure, Front suspension components (ball joints, tie rods), Valve cover gasket leaks, Minor oil leaks (rear main seal, oil pan gasket)
Electrical Concerns:
Headlight switch failure, Power window motor issues, PCM (Powertrain Control Module) issues
Oil Filter Part Number:
Mopar: MO-098, Fram: PH373 or CH373, Wix: 57356
Air Filter Part Number:
Mopar: 53017809, Fram: CA8795, Wix: 42260
Brand History:
Jeep, a division of Chrysler, has a long heritage in rugged, off-road capable vehicles dating back to WWII.
Wj Generation Years:
1999-2004
Wj Redesign Notes:
The WJ generation introduced a unibody construction for improved on-road manners and a more refined interior, moving away from the previous Grand Cherokee's body-on-frame design. It also shared its platform with Mercedes-Benz.
Manufacturing Location:
Jefferson North Assembly Plant, Detroit, Michigan, USA
Significant Awards:
Jeep Grand Cherokee models, including the WJ generation, have historically received accolades for off-road capability and towing prowess.
Vehicle Reliability Index:
Varies by year and specific components, often rated as average to above average for its class in its era.
