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Jeep Grand Cherokee WK 2008 Factory Service Repair Manual
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🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Model Code: WK Year: 2008 Codes Platform: WK 👋 Introduction Market Position Segment: Mid-size Luxury SUV Positioning: Premium off-road capable SUV...
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🏷️ Basic Information
Identification
Make:
Jeep
Model:
Grand Cherokee
Model Code:
WK
Year:
2008
Codes
Platform:
WK
👋 Introduction
Market Position
Segment:
Mid-size Luxury SUV
Positioning:
Premium off-road capable SUV with comfortable on-road manners
Competitive Analysis
Competitors:
Ford Explorer, Toyota 4Runner, Nissan Pathfinder, Chevrolet TrailBlazer, Land Rover LR3
Key Features
Platform Basis:
Shared platform with Mercedes-Benz M-Class (W164)
Off Road Capability:
Quadra-Trac II or Quadra-Drive II 4WD systems, available Hill Descent Control
Powertrain Options:
Range of V6 and V8 HEMI engines
Interior Appointments:
Premium materials, available leather, advanced technology features
📋 Manual Details
Coverage Areas
Coverage Scope:
Comprehensive repair and service information
Page Count
Estimated Pages:
Approximately 2000+ pages (typical for factory service manuals of this era)
Manual Type
Type:
Factory Service Repair Manual
Language
Language:
English
Format
Format:
Digital (PDF)
📖 Manual Coverage
Systems Covered
Engine Mechanical:
Engine assembly, disassembly, inspection, repair procedures for all available engines
Engine Performance:
Fuel system, ignition system, emissions control, cooling system, lubrication system
Transmission Mechanical:
Automatic transmission (e.g., W5A580/NAG1) service, repair, and overhaul
Drivetrain:
Transfer case, differentials (front and rear), drive shafts, CV joints
Suspension:
Front and rear suspension components, springs, shock absorbers, control arms, ball joints, bushings
Steering:
Steering gear, power steering pump, steering column, linkages
Brakes:
Front and rear brake systems, calipers, rotors, pads, ABS, ESP/ESC components
Electrical System:
Charging system, starting system, battery, lighting, fuses, relays
Electronics Control Modules:
ECU, TCU, BCM, ABS module diagnostics and repair
Body And Chassis:
Body construction, panels, doors, windows, locks, interior trim
HVAC:
Heating, ventilation, and air conditioning system diagnosis and repair
Restraints:
Airbag system, seat belts, SRS module
Infotainment:
Radio, navigation, audio system troubleshooting
Procedures Included
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks
Troubleshooting:
Diagnostic flowcharts, symptom-based troubleshooting guides
Repair:
Component removal, installation, disassembly, and reassembly procedures
Diagnostics:
OBD-II diagnostics, trouble code explanations, sensor testing
Wiring Diagrams:
Complete electrical schematics for all systems
Specifications:
Torque specifications, fluid capacities, clearances, tolerances
Special Tools:
Identification and usage of specialized service tools
Technical Depth
Depth:
Complete factory-level repair and diagnostic information
📊 Manual Specifications
File Format
Searchable:
Yes, text-searchable PDF
Printable:
Yes, printable pages
Print Quality
Image Resolution:
High-resolution for clarity of diagrams and text
Binding Type
Binding:
N/A (Digital Format)
Paper Type
Paper Quality:
N/A (Digital Format)
⚙️ Engine Specifications
Primary Engine
Engine 1 Code:
3.7L V6 (PowerTech)
Engine 1 Displacement:
3.7 liters (226 cubic inches)
Engine 1 Horsepower:
210 hp @ 5200 rpm
Engine 1 Torque:
235 lb-ft @ 4000 rpm
Engine 2 Code:
4.7L V8 (High Output Magnum)
Engine 2 Displacement:
4.7 liters (287 cubic inches)
Engine 2 Horsepower:
231 hp @ 4500 rpm
Engine 2 Torque:
290 lb-ft @ 3500 rpm
Engine 3 Code:
5.7L V8 HEMI (ESF)
Engine 3 Displacement:
5.7 liters (345 cubic inches)
Engine 3 Horsepower:
357 hp @ 5000 rpm
Engine 3 Torque:
390 lb-ft @ 4000 rpm
Performance
Performance Features:
Variable Valve Timing (VVT) on 3.7L and 5.7L, MDS (Multi-Displacement System) on 5.7L HEMI
Fuel System
Fuel Delivery:
Multi-port Fuel Injection (MPI)
Fuel Type:
Unleaded gasoline (Premium recommended for HEMI for optimal performance)
🔧 Transmission
Standard
Transmission Type V6 V8 4.7L:
5-speed automatic (545RFE)
Transmission Type V8 5.7L:
5-speed automatic (W5A580 / NAG1 - Mercedes-Benz sourced)
Optional
Optional Transmissions:
N/A (all engines paired with specific automatics)
Features
Transmission Features:
Electronic range selection, Selec-Trac (on some models for 4WD selection), Hill Start Assist (with specific 4WD systems)
📐 Dimensions
Exterior
Length:
189.8 inches (4821 mm)
Width:
74.8 inches (1899 mm)
Height:
69.6 inches (1768 mm)
Wheelbase:
114.8 inches (2916 mm)
Interior
Passenger Volume:
105.4 cu ft (2985 L)
Cargo
Cargo Volume Behind 2Nd Row:
35.1 cu ft (994 L)
Cargo Volume With 2Nd Row Folded:
77.0 cu ft (2181 L)
Weights
Curb Weight Min:
4546 lbs (2062 kg) (for 3.7L 2WD)
Curb Weight Max:
4938 lbs (2240 kg) (for 5.7L 4WD)
Towing Capacity Max:
Up to 7,400 lbs (3357 kg) (with optional towing package)
Payload Capacity Max:
Approx. 1000-1200 lbs (454-544 kg) depending on configuration
🛡️ Safety Features
Ratings
NHTSA Frontal Driver Rating:
5 Stars
NHTSA Frontal Passenger Rating:
5 Stars
NHTSA Side Driver Rating:
5 Stars
NHTSA Side Rear Passenger Rating:
5 Stars
IIHS Roof Strength Rating:
Good
Active Features
Electronic Stability Control:
Standard (ESP/ESC)
Antilock Brakes:
Standard (4-wheel disc ABS)
Traction Control:
Standard (TCS)
Hill Start Assist:
Available with certain 4WD systems
Passive Features
Airbags:
Front airbags, front side-impact airbags, available full-length side-curtain airbags
Seat Belts:
Pretensioner seat belts, rear LATCH child seat anchors
💡 Technology Features
Infotainment
Infotainment System:
Optional Uconnect Navigation system with CD/DVD/MP3 player, satellite radio, and Bluetooth connectivity
Display Type:
6.5-inch touchscreen (on navigation equipped models)
Driver Assistance
Parking Assist:
Available rear park assist system
Camera System:
Available rear backup camera
Connectivity
Connectivity Options:
Bluetooth hands-free calling, USB input (on later models/upgrades)
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 6,000 miles or 6 months (under normal driving conditions)
Engine Air Filter Replacement:
Every 30,000 miles or 30 months
Cabin Air Filter Replacement:
Every 15,000 miles or 15 months
Spark Plug Replacement 3.7L:
Every 100,000 miles (Long-Life Platinum)
Spark Plug Replacement 5.7L:
Every 100,000 miles (Long-Life Platinum)
Transmission Fluid Change 545Rfe:
Every 60,000 miles (ATF+4)
Transmission Fluid Change W5A580:
Every 60,000 miles (MB 236.10 spec fluid)
Fluid Specifications
Engine Oil 3.7L 4.7L:
SAE 5W-30, API SN/SM or Chrysler MS-6395
Engine Oil 5.7L:
SAE 5W-20, API SN/SM or Chrysler MS-6395 (MDS engines)
Engine Coolant:
OAT (Organic Additive Technology) HOAT Antifreeze/Coolant, Mopar OAT 5 Year/100,000 Mile Formula (Purple)
Brake Fluid:
DOT 3
Power Steering Fluid:
Chrysler Power Steering Fluid (MS-5901) or equivalent
Transfer Case Fluid:
Mopar NV245 / NV247 / NV248 Transfer Case Fluid or Mopar ATF+4
Differential Fluid:
API GL-5, SAE 75W-90 (Front and Rear)
Known Issues
Common Issue Evap System:
EVAP system leaks, often related to charcoal canister or vent solenoid
Common Issue Suspension:
Worn front control arm bushings, ball joints, and tie rod ends leading to steering looseness or clunks
Common Issue Electronics:
Various electronic gremlins, often related to CAN bus communication or specific modules like the BCM
Common Issue HVAC:
Blend door actuator failures causing improper temperature control or air direction
Common Issue Hemi Mds:
MDS solenoid failure or lifter issues on the 5.7L HEMI, can lead to rough running or misfires
📚 Vehicle History
Brand Heritage
Brand Focus:
Jeep's legacy of robust off-road vehicles and capable SUVs
Model Evolution
Wk Generation Intro:
Introduced for the 2005 model year, representing a significant redesign from the previous WJ generation
Wk Updates 2008:
Received powertrain updates, including the new 5.7L HEMI and refined 3.7L V6. Improved interior materials and available technology.
Production
Production Location:
Jefferson North Assembly, Detroit, Michigan, USA
Production Years Wk:
2005-2010
🏆 Awards & Recognition
Recognitions
Auto Ratings 2008:
KBB.com's "Most Refined" SUV title for 2008
Safety Awards 2008:
IIHS Top Safety Pick for 2008 (contributed by its strong crash test performance)