🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Year:

2008

Chassis Code:

WK

Market:

North America (implied by description)

👋 Introduction

Market Segment:

Mid-size luxury SUV segment.

Brand Perception:

Jeep is known for its off-road capability and ruggedness, even in its more luxurious offerings like the Grand Cherokee.

Key Competitors 2008:

Ford Explorer, Toyota 4Runner, Honda Pilot, Nissan Pathfinder, Chevrolet TrailBlazer, GMC Envoy, Land Rover LR3/Discovery.

Platform:

WK platform, shared with Mercedes-Benz M-Class (W164) and GL-Class (X164) during this period due to DaimlerChrysler alliance.

Primary Benefit:

Accurate identification and ordering of OEM Jeep parts for the 2008 Grand Cherokee WK.

Utility For Users:

Indispensable for mechanics, body shops, parts departments, and DIY enthusiasts needing precise part information.

📋 Manual Details

Coverage Type:

Parts Catalog / Parts Manual

Drivetrain Options Covered:

4x2, 4x4

Trim Levels Covered:

All standard Grand Cherokee WK series trims (specific trims not detailed in product info but implied by comprehensive nature)

Estimated Page Count:

Over 1000 pages (typical for comprehensive parts catalogs of this era)

Manual Type:

Illustrated Parts Catalog (IPC)

Language:

English

Format:

Downloadable Digital File (likely PDF)

📖 Manual Coverage

Engine Assembly:

Engine block, cylinder head, crankshaft, pistons, connecting rods, valves, timing components, cooling system, exhaust system, fuel system (injectors, rails, pump - external components)

Transmission Drivetrain:

Automatic transmission (e.g., W5A580, 45RFE/545RFE), transfer case, differentials (front and rear), driveshafts, axles, CV joints, propeller shafts

Suspension Steering:

Front and rear suspension components (control arms, ball joints, bushings, springs, shock absorbers/struts), steering gear, steering column, power steering system components

Brakes:

Brake system components (calipers, rotors, pads, master cylinder, brake lines, parking brake mechanism)

Electrical System:

Wiring harnesses, connectors, fuses, relays, battery, alternator, starter motor, lighting (headlamps, taillamps, interior), sensors, ECUs (identification of modules, not detailed schematics)

Body Exterior:

Body panels (fenders, doors, hood, liftgate), bumpers, grille, glass, mirrors, seals, exterior trim, roof rack, running boards

Body Interior:

Seats, dashboard, instrument panel components, door panels, center console, upholstery, floor coverings, airbags (modules and components), HVAC interior controls

Wheels Tires:

Wheels, tires (sizes and specifications implied), lug nuts

Part Identification:

Detailed diagrams with exploded views and callouts for every component.

Part Number Lookup:

Essential for ordering correct replacement parts.

Assembly Disassembly Reference:

Provides visual guidance on how components are integrated.

Depth Of Coverage:

Component-level identification and referencing. Does not typically include diagnostic procedures, repair instructions, or torque specifications. Focuses on what part goes where and its part number.

📊 Manual Specifications

File Format:

PDF (Portable Document Format) - common for digital manuals

Searchability:

Likely text-searchable PDF for efficient part number or description lookup.

Illustration Quality:

High-quality, clear, and detailed illustrations (as stated in product description).

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Option 1:

3.0L V6 CRD (Diesel)

Engine Displacement Diesel:

2987 cc (182 cu in)

Engine Code Diesel:

OM642 (Mercedes-Benz sourced)

Engine Power Diesel:

215 hp @ 4000 rpm

Engine Torque Diesel:

376 lb-ft @ 1600-2600 rpm

Engine Option 2:

3.7L V6 Magnum

Engine Displacement 3.7L:

3701 cc (226 cu in)

Engine Code 3.7L:

EWG

Engine Power 3.7L:

210 hp @ 5200 rpm

Engine Torque 3.7L:

235 lb-ft @ 4000 rpm

Engine Option 3:

4.7L V8 Magnum

Engine Displacement 4.7L:

4701 cc (287 cu in)

Engine Code 4.7L:

ENH/ENR

Engine Power 4.7L:

230 hp @ 4700 rpm

Engine Torque 4.7L:

290 lb-ft @ 3200 rpm

Engine Option 4:

5.7L V8 HEMI

Engine Displacement 5.7L:

5654 cc (345 cu in)

Engine Code 5.7L:

DMD

Engine Power 5.7L:

357 hp @ 5200 rpm

Engine Torque 5.7L:

390 lb-ft @ 4000 rpm

Fuel Delivery:

Electronic Fuel Injection (EFI)

Fuel Type Gasoline:

Unleaded gasoline (Premium recommended for HEMI)

Fuel Type Diesel:

Diesel fuel

🔧 Transmission

Standard Transmission:

5-speed automatic (545RFE/45RFE for V6/V8 gasoline, W5A580 for Diesel)

Optional Transmission:

None (Automatic was standard across all engines for 2008)

Transmission Control:

Electronic transmission control with overdrive.

Transfer Case Options:

Selec-Trac II (full-time 4WD) or Quadra-Trac II (full-time 4WD with low range) depending on trim/options.

📐 Dimensions

Wheelbase:

114.8 inches (2916 mm)

Length:

188.8 inches (4800 mm)

Width:

74.4 inches (1890 mm)

Height:

69.4 inches (1763 mm)

Ground Clearance:

Approx. 8.1 inches (206 mm) for standard models, higher for Off-Road Group.

Curb Weight Range:

Approximately 4,500 - 5,000 lbs (2041 - 2268 kg), depending on engine and drivetrain.

Towing Capacity:

Up to 7,400 lbs (3357 kg) with optional towing package (5.7L HEMI recommended).

🛡️ Safety Features

NHTSA Front Driver Side:

5-Star (2008 Model)

NHTSA Front Passenger Side:

5-Star (2008 Model)

NHTSA Side Driver:

5-Star (2008 Model)

NHTSA Side Passenger:

5-Star (2008 Model)

NHTSA Rollover:

4-Star (2008 Model)

IIHS Front Offset Impact:

Good (2008 Model)

IIHS Side Impact:

Good (2008 Model)

Traction Control:

Standard on all models.

Electronic Stability Control:

Standard on all models (ESP).

Anti Lock Brakes:

Standard on all models (ABS).

Airbags:

Front airbags, front side-impact airbags, available full-length side curtain airbags.

Seatbelts:

Three-point seat belts with pretensioners.

💡 Technology Features

Infotainment System:

Optional Uconnect infotainment system with touchscreen navigation, satellite radio, and auxiliary input. Standard audio systems varied by trim.

Audio Options:

Boston Acoustics premium audio system available on higher trims.

Parking Assistance:

Optional rear park assist sensors.

Cruise Control:

Standard cruise control.

Connectivity Options:

Bluetooth hands-free calling (with Uconnect), SiriusXM Satellite Radio.

🔧 Maintenance

Oil Change Interval:

Typically every 5,000 - 7,500 miles or 6 months for gasoline engines, depending on driving conditions and oil type used. Diesel may vary.

Air Filter Replacement:

Every 30,000 miles or as needed based on inspection (higher in dusty conditions).

Spark Plug Replacement:

Varies by engine: 3.7L V6 ~100,000 miles, 5.7L HEMI (with Multi-Displacement System) ~100,000 miles (using specific plugs). Diesel glow plugs and service intervals differ.

Transmission Fluid Service:

Recommended at 60,000 miles or as per severe service schedule. Always use correct fluid type.

Engine Oil Gasoline:

SAE 5W-20 (API SN or equivalent). Consult manual for specific HEMI requirements (e.g., Chrysler MS-6395).

Engine Oil Diesel:

SAE 5W-40 or 10W-40 meeting API CJ-4 or CK-4 specifications (Mercedes-Benz MB 229.51 or MB 228.51 recommended).

Coolant:

HOAT (Hybrid Organic Acid Technology) coolant, typically Mopar OAT or equivalent.

Transmission Fluid Automatic:

ATF+4 (Chrysler MS-9602) for gasoline engines. For W5A580 (diesel), use MB-Approval 236.10 or 236.14 specification fluid.

Brake Fluid:

DOT 3 or DOT 4 brake fluid.

Common Issues Wk:

Water pump leaks (especially 5.7L HEMI), alternator failure, EGR valve issues (diesel), suspension component wear (ball joints, bushings), heated oxygen sensor failures, transmission solenoid issues (specific to 545RFE), power tailgate issues, potential for rust on underbody components.

Common Issues Diesel:

DPF (Diesel Particulate Filter) regeneration issues, glow plug failures, injector issues, turbocharger problems, EGR cooler leaks are common concerns with the OM642 engine if not properly maintained.

📚 Vehicle History

Jeep Legacy:

Founded in 1941, Jeep is synonymous with off-road prowess and durable vehicles.

Grand Cherokee Origins:

Introduced in 1993 as Jeep's first luxury SUV, bridging the gap between its utilitarian roots and premium market.

Wk Generation:

The WK generation (2005-2010) represented a significant step in refinement and shared technology with Mercedes-Benz.

Wk Production Years:

2005-2010

Manufacturing Locations Wk:

Jefferson North Assembly Plant, Detroit, Michigan, USA.

🏆 Awards & Recognition

Design Awards:

The WK Grand Cherokee often received praise for its improved interior quality and upscale design compared to previous generations.

Fuel Economy Ratings:

MPG ratings varied significantly by engine: 3.7L V6 (14 City / 19 Hwy), 4.7L V8 (13 City / 19 Hwy), 5.7L V8 (14 City / 19 Hwy), 3.0L Diesel (17 City / 22 Hwy) - estimates based on typical EPA figures for that era.

Off Road Certifications:

Jeep's off-road capability is a core attribute, though specific certifications for civilian models are rare. The available systems (like Quadra-Trac II) are engineered for off-road use.