Four-wheel Drive Systems (Quadra-Trac I, Quadra-Trac II, Quadra-Drive II), Differentials (Front, Rear), Transfer Case (NV245, NV140, NV240), Axles, Driveshafts
Suspension:
Front Independent Suspension (Double Wishbone), Rear Multi-Link Solid Axle, Air Suspension (optional on some trims)
Steering:
Hydraulic Power Steering, Steering Column, Steering Gear
Brakes:
Front Ventilated Discs, Rear Solid Discs, ABS, Electronic Brake Force Distribution (EBD), Brake Booster, Parking Brake
Panel alignment, trim removal/installation, glass replacement
HVAC Service:
Refrigerant handling, component replacement, system evacuation and charging
Safety System Service:
Airbag module replacement, seatbelt repair, SRS system diagnostics
Troubleshooting Guides:
Step-by-step diagnosis for common and complex problems
Torque Specifications:
Detailed torque values for all fasteners
Technical Depth
Depth:
Comprehensive (from basic maintenance to complete engine and transmission rebuilds)
Diagnostics Level:
Advanced diagnostic procedures, including component testing and waveform analysis
Wiring Diagrams:
Detailed, system-specific wiring diagrams
โ๏ธ Engine Specifications
Primary Engine
Engine 1 Type:
3.7L SOHC V6 (PowerTech)
Engine 1 Displacement:
3701 cc (225.9 cu in)
Engine 1 Bore X Stroke:
93.0 mm x 90.9 mm (3.66 in x 3.58 in)
Engine 1 Compression Ratio:
9.6:1
Engine 1 Horsepower:
210 hp @ 5200 rpm (approx.)
Engine 1 Torque:
235 lb-ft @ 4000 rpm (approx.)
Secondary Engine
Engine 2 Type:
4.7L SOHC V8 (PowerTech)
Engine 2 Displacement:
4701 cc (286.9 cu in)
Engine 2 Horsepower:
230 hp @ 4500 rpm (approx.)
Engine 2 Torque:
275 lb-ft @ 3600 rpm (approx.)
Tertiary Engine
Engine 3 Type:
5.7L OHV V8 HEMI (Multi-Displacement System)
Engine 3 Displacement:
5654 cc (345 cu in)
Engine 3 Horsepower:
326-357 hp @ 5000-5200 rpm (depending on year/tune)
Engine 3 Torque:
370-390 lb-ft @ 4000-4200 rpm (depending on year/tune)
Performance
Engine 4 Type:
6.1L OHV V8 HEMI (SRT8)
Engine 4 Displacement:
6060 cc (370 cu in)
Engine 4 Horsepower:
420-425 hp @ 6000-6200 rpm
Engine 4 Torque:
420-420 lb-ft @ 4800-4800 rpm
Fuel System
Fuel Delivery:
Multi-Port Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline (87 Octane recommended, higher for HEMI variants)
Exhaust System:
Dual exhaust on V8 models, catalytic converters meeting emissions standards
๐ง Transmission
Standard
Transmission 1 Type:
5-Speed Automatic (5-45RFE or W5A580 depending on engine)
Optional
Transmission 2 Type:
5-Speed Manual (NV3500, rare, primarily early 3.7L)
Transmission 3 Type:
5-Speed Automatic (65RFE, later for 5.7L HEMI)
Features
Transmission Fluid Type:
ATF+4 (Mopar Material)
Transmission Fluid Capacity:
Approximately 9.0 - 10.0 quarts (8.5 - 9.4 liters) for most automatic transmissions (check specific model)
Transfer Case Options:
NV245 (Full-Time 4WD, Quadra-Trac II/Quadra-Drive II), NV140 (Part-Time 4WD, Quadra-Trac I), NV240 (Part-Time 4WD, Quadra-Trac I - less common)
๐ Dimensions
Exterior
Wheelbase:
114.7 inches (2913 mm)
Length:
189.4 inches (4811 mm)
Width:
75.9 inches (1928 mm)
Height:
69.4 inches (1763 mm) (standard suspension)
Weights
Curb Weight:
4,500 - 5,200 lbs (2041 - 2359 kg) (depending on engine and options)
Gross Vehicle Weight Rating:
6,050 - 6,500 lbs (2744 - 2948 kg) (depending on configuration)
Towing Capacity:
Up to 7,400 lbs (3357 kg) (with V8 and towing package)
๐ก๏ธ Safety Features
Ratings
NHTSA Front Impact:
5-Star (Driver and Passenger)
NHTSA Side Impact:
5-Star (Front and Rear Passengers)
IIHS Moderate Overlap Front:
Good
IIHS Side Impact:
Good
Active Features
ABS:
Standard (Anti-lock Braking System)
Traction Control:
Standard
Electronic Stability Control:
Standard (Electronic Stability Program - ESP)
Brake Assist:
Standard
Passive Features
Airbags Front:
Driver and Passenger Frontal Airbags
Airbags Side:
Front Seat-Mounted Side Airbags, Front and Rear Side Curtain Airbags
Seatbelts:
3-point seatbelts with pretensioners and load limiters
Child Seat Anchors:
LATCH system (Lower Anchors and Tethers for Children)
๐ก Technology Features
Infotainment
Available Systems:
MyGIG infotainment system, navigation systems, SiriusXM Satellite Radio, premium audio systems (e.g., Boston Acoustics, Alpine).
Connectivity Options:
Auxiliary input jack, optional USB input, Bluetooth hands-free communication (Uconnect).
Driver Assistance
Optional Features:
ParkSenseยฎ Rear Park Assist, Trailer Sway Control, Remote Start System.
Tire Pressure Monitoring:
Standard on most models.
Other Technology
Keyless Entry:
Standard Keyless Entry, available Remote Keyless Entry and Ignition.
Cruise Control:
Standard, with steering wheel controls.
๐ง Maintenance
Service Intervals
Oil Change Interval:
Every 6,000 to 7,500 miles (9,650 to 12,070 km) or 6 months, whichever comes first (depending on driving conditions and oil type used; refer to owner's manual for specific recommendation).
Engine Air Filter:
Inspect every 15,000 miles (24,000 km), replace as needed or every 30,000 miles (48,000 km).
Cabin Air Filter:
Replace annually or every 15,000 miles (24,000 km).
Spark Plugs:
3.7L V6: Iridium spark plugs, ~100,000 miles. 4.7L V8: Platinum spark plugs, ~100,000 miles. 5.7L HEMI: Spark plugs may vary, consult manual or specific service information.
Transmission Fluid Service:
Inspect fluid condition every 30,000 miles (48,000 km). Replacement recommended around 80,000-100,000 miles (128,750-160,935 km), or under severe use conditions.
Coolant Replacement:
Initial replacement at 100,000 miles (160,935 km), then every 50,000 miles (80,467 km) thereafter (typically HOAT coolant).
Fluid Specifications
Engine Oil Type:
SAE 5W-20 (preferred for 3.7L and 5.7L HEMI in most conditions), SAE 5W-30 may be specified for 4.7L V8 and in certain climates/loads. Always use API certified oil.
Totally Integrated Power Module (TIPM) issues can cause various electrical problems, including blower motor failure, fuel pump issues, and horn problems.
HVAC Blend Door Actuators:
Common failure leading to improper temperature control or airflow direction.
Raking Window Motors:
Rear power window regulators and motors can fail.
Exhaust Manifold Cracks:
Cast iron exhaust manifolds (especially on V8s) can develop cracks due to heat cycles, causing exhaust leaks and ticking noises.
Transmission Shudder:
Some W5A580 (Mercedes-Benz sourced) transmissions can develop shudder under certain conditions, often related to torque converter clutch or fluid.
Hemi Lifter Tick:
Some HEMI engines may develop a ticking noise from the valvetrain, potentially related to lifters or MDS system.
๐ Vehicle History
Brand Heritage
Jeep Legacy:
Jeep has a long-standing reputation for ruggedness and off-road capability since its WWII origins.
Model Evolution
Wk Generation:
The WK generation (2005-2010) represented a significant redesign, moving to a unibody construction (shared with Mercedes-Benz M-Class) for improved on-road manners and luxury, while retaining off-road DNA.
Design Influences:
Designed by Trevor Creed, the WK aimed for a more refined and modern aesthetic compared to its predecessor (WJ).
Production
Manufacturing Locations:
Jefferson North Assembly Plant, Detroit, Michigan, USA
๐ Awards & Recognition
Recognitions
Family Car Of The Year:
Some Jeep Grand Cherokees from this era received awards in the SUV or Family Vehicle categories from publications like MotorWeek.
Segment Performance:
Consistently ranked as a strong contender in the mid-size SUV segment for its blend of luxury, capability, and versatility.
Saftey Awards:
Achieved top safety ratings from NHTSA and IIHS for most model years.