🏷️ Basic Information Identification Make: Hummer Model: H3 Year: 2008 Product Type: Service & Repair Manual Software Codes Platform: GMT360 (shared with Chevrolet Colorado/GMC Canyon, Isuzu i-Series) 👋 Introduction Market Position Segment: Mid-size SUV, known for off-road capability and distinctive styling Competitive Analysis Key Competitors 2008: Jeep Wrangler Unlimited, Toyota 4Runner, Ford Explorer, Nissan Xterra Key Features Distinguishing Features: Unique Hummer styling, robust chassis, available 4WD systems, strong off-road prowess. Software Advantage Benefits Over Print: Instant access, searchability, up-to-date information (where applicable), convenience across multiple devices, cost-effectiveness. 📋 Manual Details Coverage Areas Areas Covered: Engine, Drivetrain, Transmission, Brakes, Suspension, Steering, HVAC, Electrical Systems, Body, Chassis, Diagnostic Procedures, Maintenance Schedules, Troubleshooting Page Count Estimated Page Count: Extensive (Digital format, content dynamically presented; equivalent to over 2000 pages of printed material) Manual Type Manual Type: Factory-Licensed Service and Repair Manual Language Language: English Format Format: Online Software/Web-Based Access Access Access Duration: 1 Year Subscription 📖 Manual Coverage Systems Covered Engine Management: Engine mechanical, lubrication, cooling, fuel injection, ignition, emissions control, starting, charging Drivetrain And Transmission: Manual transmission, automatic transmission (4L60-E), transfer case, drive shafts, axles, differentials Suspension And Steering: Front suspension (torsion bar), rear suspension (leaf springs), steering gear, power steering system Brakes: Front disc brakes, rear drum brakes (or disc depending on configuration), ABS system, parking brake Electrical And Lighting: Wiring diagrams, lighting system, body control module (BCM), instrument cluster, infotainment, power accessories HVAC And Comfort: Heating, ventilation, air conditioning (HVAC) system, climate control Body And Chassis: Frame, body panels, doors, windows, interior trim, bumpers, glass Procedures Included Maintenance Procedures: Oil change, filter replacement, fluid checks and changes, tire rotation, brake pad replacement, spark plug replacement Repair Procedures: Engine component replacement, transmission overhaul, suspension component repair, brake system service, electrical component diagnosis and replacement Diagnostic Procedures: Troubleshooting guides, diagnostic trouble codes (DTCs), symptom-based diagnostics Technical Specifications: Torque specifications, fluid capacities, clearances, diagnostic parameters Technical Depth Depth Of Coverage: Comprehensive, covering routine maintenance to complete engine and transmission rebuilds, including detailed wiring diagrams and diagnostic flowcharts. 📊 Manual Specifications File Format Software Compatibility: Web browser compatible (Chrome, Firefox, Safari, Edge, etc.) on PC, Laptop, Smartphone, Tablet Print Quality Print Capability: Printable pages directly from the web interface (quality dependent on user's printer) Binding Type Binding Type: Not Applicable (Digital Format) Paper Type Paper Type: Not Applicable (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Option 1: 3.7L Inline-5 ( Vortec 3700 LLR) Performance Horsepower 3.7L: 242 hp @ 5600 rpm Torque 3.7L: 242 lb-ft @ 4600 rpm Horsepower 5.3L V8: 300 hp @ 5200 rpm Torque 5.3L V8: 320 lb-ft @ 4000 rpm Fuel System Fuel Delivery 3.7L: Sequential Multi-Port Fuel Injection (MPI) Fuel Delivery 5.3L V8: Sequential Fuel Injection (SFI) Engine Code Engine Code 3.7L: LLR Engine Code 5.3L V8: LH6 Optional Engine Engine Option 2: 5.3L V8 ( Vortec 5300 LH6 - for H3 Alpha model) 🔧 Transmission Standard Transmission Transmission Type: 5-Speed Manual (Getrag MM550) Optional Transmission Transmission Type Automatic: 4-Speed Automatic (GM 4L60-E) Features 4Wd System: Full-time 4WD with electronic locking rear differential standard. Optional: Off-Road Suspension Package with skid plates, dual-locking rear differential. 📐 Dimensions Exterior Length: 188.5 inches Width: 81.2 inches (including fender flares) Height: 77.0 inches Wheelbase: 111.0 inches Weights Curb Weight Approx Manual: 4,700 lbs Curb Weight Approx Automatic: 4,800 lbs Towing Capacity: Up to 6,000 lbs 🛡️ Safety Features Ratings NHTSA Front Impact Driver: ★★★★☆ (4/5 Stars) NHTSA Front Impact Passenger: ★★★★☆ (4/5 Stars) NHTSA Side Impact Front Driver: ★★★★★ (5/5 Stars) NHTSA Side Impact Front Passenger: ★★★★★ (5/5 Stars) NHTSA Side Impact Rear Passenger: ★★★★☆ (4/5 Stars) IIHS Frontal Offset: Good IIHS Side Impact: Good Active Features Traction Control: Standard StabiliTrak electronic stability control Antilock Brakes: Standard Anti-lock Braking System (ABS) Passive Features Airbags: Driver and front passenger airbags, front side-impact airbags 💡 Technology Features Infotainment Infotainment System: Optional AM/FM/CD/MP3 audio system, available navigation system. Driver Assistance Driver Assistance Features: StabiliTrak electronic stability control, traction control. Connectivity Connectivity Options: OnStar system (subscription-based). 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles or 6 months, whichever comes first (synthetic oil recommended) Tire Rotation Interval: Every 7,500 miles Spark Plug Replacement Interval 3.7L: Approximately 100,000 miles (refer to manual for specific type and gap) Fluid Specifications Engine Oil Type 3.7L: SAE 5W-30 Synthetic Engine Oil Capacity 3.7L: 5.5 quarts (with filter) Transmission Fluid Type Automatic: Dexron VI (or equivalent) Transfer Case Fluid Type: GM Auto-Trak II (or equivalent) Coolant Type: GM P/N 12346290 (Green) or equivalent extended-life coolant Known Issues Common Issues: Radiator leaks, HVAC blower motor failure, front suspension creaks (torsion bar), potential intake manifold gasket leaks on 3.7L. 📚 Vehicle History Brand Heritage Brand Origins: Hummer was originally founded by AM General, known for the Humvee military vehicle. Model Evolution First Generation Start: 2006 Generation Overview: The H3 was the smallest...