Vehicle Segment:
Mid-size Luxury SUV
Key Differentiators:
Strong off-road capability (Quadra-Trac II, Selec-Trac systems), comfortable ride, luxurious interior appointments for its era, potent V8 engine option.
Competitors:
Ford Explorer, Chevrolet Blazer/TrailBlazer, Toyota 4Runner, Land Rover Discovery, Lexus RX.
Features:
Available Quadra-Drive (electronic limited-slip differentials), advanced Quadra-Trac II transfer case, premium sound systems, leather upholstery, dual-zone climate control.
Model Years Covered:
1999, 2000, 2001, 2002, 2003, 2004
Engine Variants Covered:
4.0L I6, 4.7L V8 (both P0740 and P0745 variants)
Estimated Page Count:
Over 2000 pages (typical for comprehensive factory service manuals of this era)
Type:
Service and Repair Manual
Powertrain:
Engine mechanical (4.0L I6, 4.7L V8), fuel system, ignition system, exhaust system, cooling system, lubrication system, transmission (42RE, 45RFE/545RFE), transfer case (NV242, NV247, NV231 HD).
Chassis:
Braking system (ABS, RWAL), suspension (front solid axle, rear solid axle), steering system, driveline (front/rear axles, driveshafts, CV joints).
Electrical:
12V electrical system, charging system, starting system, lighting, instrument cluster, body control modules (BCM), powertrain control modules (PCM), anti-theft system, airbags, power accessories.
Body:
Body and frame construction, exterior trim, interior trim, doors, windows, seats, HVAC system.
Maintenance:
Scheduled maintenance (oil changes, filter replacements, fluid checks), tire rotation, brake inspection, belt inspection/replacement.
Troubleshooting:
Diagnostic procedures for common drivability issues, electrical faults, HVAC problems, guided by symptom charts and diagnostic trouble codes (DTCs).
Repair And Overhaul:
Detailed step-by-step instructions for component removal, overhaul, and reinstallation, including engine rebuilds, transmission service, suspension component replacement, and brake caliper service.
Specifications And Data:
Torque specifications, fluid capacities and types, electrical resistance values, diagnostic data, alignment specifications.
Depth:
Comprehensive factory-level detail covering routine maintenance, diagnostics, repair, and complete overhauls for all major vehicle systems.
4.0L I6:
Engine Code: PowerTech. Displacement: 3952 cc (241 ci). Bore x Stroke: 91.0 mm x 94.5 mm. Compression Ratio: 8.8:1. Horsepower: 190 hp @ 4800 rpm. Torque: 235 lb-ft @ 3200 rpm. Block Material: Cast Iron. Head Material: Cast Iron.
4.7L V8:
Engine Code: Magnum. Displacement: 4701 cc (287 ci). Bore x Stroke: 93.0 mm x 86.5 mm. Compression Ratio: 9.0:1. Horsepower: 235 hp @ 4800 rpm (early models), 235 hp @ 4800 rpm (later models, slight torque increase). Torque: 295 lb-ft @ 3200 rpm (early models), 300 lb-ft @ 3200 rpm (later models). Block Material: Cast Iron. Head Material: Aluminum.
Acceleration 0 60 Mph:
Approx. 8.5 - 9.5 seconds (V8), 9.5 - 11 seconds (I6), depending on configuration and conditions.
Induction:
Sequential Multi-Port Fuel Injection (MPI).
Fuel Type:
Unleaded Regular 87 Octane (minimum) for 4.0L I6. Unleaded Premium 91 Octane (recommended) for 4.7L V8 for optimal performance.
4.0L I6:
42RE 4-speed automatic.
4.7L V8:
45RFE 4-speed automatic (early), 545RFE 5-speed automatic (later models, typically 2002+).
Overdrive:
All automatic transmissions feature overdrive (4th gear).
Transfer Case Options:
NV231 HD (Command-Trac - part-time 2WD/4WD), NV242 (Selec-Trac - full-time 2WD/4WD), NV247 (Quadra-Trac II - full-time 4WD with electronic bias), NV247 with Quadra-Drive (full-time 4WD with electronic limited-slip differentials).
Length:
Approx. 183.7 inches (4666 mm)
Width:
Approx. 71.5 inches (1816 mm)
Height:
Approx. 66.7 inches (1694 mm)
Wheelbase:
Approx. 110.5 inches (2807 mm)
Ground Clearance:
Approx. 8.4 inches (213 mm) - Varies with tire size and suspension.
Cargo Volume Behind Rear Seat:
Approx. 37.2 cubic feet (1053 L)
Cargo Volume With Rear Seat Folded:
Approx. 73.7 cubic feet (2087 L)
Curb Weight:
Approx. 4200 - 4700 lbs (1905 - 2132 kg) - Varies by engine and equipment.
Towing Capacity:
Up to 5000 lbs (2268 kg) with proper equipment.
NHTSA Front Impact Driver:
4 Stars (1999-2001 models). Improved in later models.
NHTSA Front Impact Passenger:
4 Stars (1999-2001 models). Improved in later models.
IIHS Side Impact:
Acceptable (2002-2004 models).
ABS:
Standard Anti-lock Braking System (ABS) on all wheels, with RWAL (Rear Wheel Anti-Lock) on some base models.
Traction Control:
Optional on some models, integrated with ABS.
Airbags:
Driver and front passenger airbags. Optional side curtain airbags on some later models.
Seatbelts:
Front pretensioner seatbelts, rear 3-point seatbelts.
Audio Systems:
Standard AM/FM/CD players. Optional Infinity Gold premium sound systems with subwoofer, multiple speakers, and CD changer.
Navigation:
Optional factory navigation system (rare).
Cruise Control:
Standard cruise control.
Parking Sensors:
Optional rear parking assist system on some higher trim levels.
Power Outlets:
12V power outlets for accessory charging.
Remote Keyless Entry:
Optional remote keyless entry system.
Oil Change Recommendation:
Every 3,000-7,500 miles (5,000-12,000 km) or 6 months, depending on driving conditions and oil type (synthetic recommended for longer intervals).
Tire Rotation:
Every 7,500 miles (12,000 km).
Transmission Fluid Change:
Every 30,000 - 60,000 miles (48,000 - 96,000 km), depending on usage and fluid type.
Coolant Flush:
Every 30,000 - 60,000 miles (48,000 - 96,000 km) or 2-4 years.
Engine Oil:
SAE 5W-30 API SG or higher (for 4.0L I6 and 4.7L V8). Consult manual for specific synthetic recommendations.
Transmission Fluid 42Re:
ATF+4 (Mopar Material Standard MS-9602).
Transmission Fluid 45Rfe/545Rfe:
ATF+4 (Mopar Material Standard MS-9602).
Transfer Case Fluid:
NV231 HD: ATF+4. NV242: ATF+4. NV247/Quadra-Drive: Mopar Transfer Case Lubricant (MS-10850) or equivalent.
Coolant:
50/50 mix of Mopar Antifreeze/Coolant (MS-7170 or MS-9769) and distilled water. (Conventional green coolant used in earlier models, HOAT in later).
Common Problems:
Cracked cylinder heads (4.7L V8), premature wear of front suspension components (ball joints, tie rods), failure of the "death wobble" phenomenon (requires diagnosis/alignment correction), transfer case chain stretch, PCM failures, instrument cluster failures (dead pixels), rear main seal leaks, water pump failures, ABS sensor failures.
Tip For 4.7L V8:
Regularly use high-quality synthetic oil and monitor coolant levels closely to mitigate cylinder head cracking risk.
Brand Origins:
Jeep, a division of American Motors Corporation (AMC), later Chrysler Corporation, then DaimlerChrysler, and now Fiat Chrysler Automobiles (FCA) / Stellantis. Known for its rugged, off-road capable vehicles since WWII.
Predecessor:
Jeep Grand Cherokee ZJ (1993-1998).
Successor:
Jeep Grand Cherokee WK (2005-2010).
Production Period:
1999-2004 model years.
Manufacturing Plant:
Jefferson North Assembly Plant, Detroit, Michigan, USA.
Automotive Press Awards:
Often praised for its off-road capability and comfortable ride. Competed well within its segment against established rivals.
Consumer Reports:
Varied ratings depending on model year and powertrain; known for some reliability concerns, particularly with the 4.7L V8 in earlier years. However, specific model years or configurations could score higher.
Emission Standards:
Meets Federal EPA emission standards for its respective model years.
