🏷️ Basic Information Identification Make: Jeep Model: Wrangler Chassis Code: JK Product Name: Jeep Wrangler JK Diagram Service Repair Manual Product Description: Jeep Wrangler JK Diagram Service Manual 👋 Introduction Market Position Category: Iconic Off-Road Vehicle Segment: Compact/Mid-size SUV (off-road focused) Competitive Analysis Key Competitors: Toyota FJ Cruiser, Nissan Xterra, Land Rover Defender (historic) Key Features Defining Characteristics: Legendary off-road capability, solid axles (front and rear on most JK models), removable doors and roof, iconic styling Target Audience: Off-road enthusiasts, adventure seekers, Jeep loyalists 📋 Manual Details Coverage Areas Primary Coverage: Complete Service and Repair for Jeep Wrangler JK Body Styles Covered: 2-Door (JK), 4-Door Unlimited (JKU) Page Count Estimated Page Count: 2500+ Manual Type Type: Factory Service Manual (FSM) / Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, disassembly, assembly, diagnostics for all JK engines Engine Management: ECM, sensors, actuators, fuel injection, ignition system diagnostics and repair Transmission Manual: NV3550 (early JK), NSG370 (later JK) - Overhaul, clutch, diagnostics Transmission Automatic: 42RLE (early JK), 62TE (later JK) - Overhaul, torque converter, diagnostics, fluid service Transfer Case: Command-Trac (NV241G), Rock-Trac (NV241OR) - Overhaul, operation, diagnostics, fluid service Drivetrain: Front and rear axles (Dana 30, Dana 44), differentials, driveshafts, U-joints, CV joints Suspension: Front and rear suspension components, coil springs, shocks, control arms, sway bars, bushings Steering: Power steering system, steering column, steering gear, tie rods, drag links Brakes: Hydraulic system, ABS, ESC, traction control, brake calipers, rotors, pads, parking brake Electrical System: Battery, charging system, starting system, lighting, fuses, relays, wiring diagrams Body And Frame: Frame inspection and repair, body panel replacement, doors, hood, tailgate, convertible top HVAC: Air conditioning, heating, ventilation, climate control system, refrigerant handling Interior: Seats, dashboard, trim panels, airbags, restraints Infotainment: Radio, navigation, Uconnect system, speaker diagnostics Procedures Included Maintenance: Oil changes, fluid checks and replacements, filter changes, tire rotation, brake pad replacement Troubleshooting: Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, component testing Repair: Step-by-step repair procedures for all major and minor components Rebuilding: Complete engine, transmission, and axle rebuilding procedures Diagnostics: In-depth diagnostic strategies for electrical and mechanical systems Technical Depth Depth: Comprehensive from basic DIY maintenance to advanced professional-level repairs and diagnostics 📊 Manual Specifications File Format File Type: PDF Searchability: Fully searchable text for quick information retrieval Printable: Printable pages for convenient workshop use Print Quality Resolution: High-resolution diagrams and images Binding Type Binding: Digital (N/A) Paper Type Paper: Digital (N/A) ⚙️ Engine Specifications Primary Engine Engine Code Gasoline: 3.6L Pentastar V6 (for most JK production years) Engine Code Gasoline Early: 3.8L EGH V6 (2007-2011) Engine Displacement Pentastar: 3604 cc (3.6 Liters) Engine Displacement Egh: 3778 cc (3.8 Liters) Performance Horsepower Pentastar: 285 hp @ 6400 rpm Torque Pentastar: 260 lb-ft @ 4800 rpm Horsepower Egh: 202 hp @ 5200 rpm Torque Egh: 237 lb-ft @ 4000 rpm Fuel System Fuel Delivery: Multi-point fuel injection (MPI) Fuel Type: Unleaded gasoline Engine Internals Valvetrain: Overhead Valve (OHV) for 3.8L EGH, Dual Overhead Camshaft (DOHC), 24-valve for 3.6L Pentastar 🔧 Transmission Standard Transmission Type Standard: 6-speed manual (NSG370 for later JK, NV3550 for early JK) Optional Transmission Type Optional: 4-speed automatic (42RLE for early JK), 5-speed automatic (for later JK with 3.8L EGH), 6-speed automatic (62TE for later JK with 3.6L Pentastar) Features Transmission Features: Includes transfer case engagement and operation procedures 📐 Dimensions Exterior Wheelbase 2Door: 95.4 inches (2423 mm) Wheelbase 4Door: 116.0 inches (2946 mm) Length 2Door: 164.3 inches (4173 mm) Length 4Door: 179.4 inches (4557 mm) Width: 73.7 inches (1872 mm) Height: 72.4 inches (1839 mm) Weights Curb Weight 2Door Min: 4080 lbs (1851 kg) Curb Weight 4Door Min: 4450 lbs (2018 kg) Gross Vehicle Weight Rating Gvw: Approx. 5500-6000 lbs (2495-2722 kg) depending on configuration 🛡️ Safety Features Ratings NHTSA Rollover Rating: 4/5 stars (Varies slightly by year and configuration) IIHS Crash Test Ratings: Generally good, with specific ratings varying by test and year. Active Features Electronic Stability Control Esc: Standard across all JK models Traction Control Tc: Standard across all JK models Anti Lock Braking System ABS: Standard across all JK models Passive Features Airbags: Front occupant airbags, optional side curtain airbags (depending on year and trim) Seatbelts: 3-point seat belts with pretensioners 💡 Technology Features Infotainment Infotainment System Options: Uconnect infotainment system with touchscreen displays, SiriusXM Satellite Radio, navigation options available on higher trims. Driver Assistance Driver Assistance Features: Hill Start Assist, Hill Descent Control (standard on Rubicon, available on others). Limited availability of advanced driver-assistance systems (ADAS) compared to modern vehicles. Connectivity Connectivity Features: Available Bluetooth connectivity, USB ports, optional Alpine premium audio system. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-10,000 miles (8,000-16,000 km) or 6-12 months, depending on driving conditions and oil type (refer to manual for specifics). Tire Rotation Interval: Every 7,500 miles (12,000...