🏷️ Basic Information Identification Make: Hummer Model: H3 Year: 2007 Product Type: Service Repair Workshop Manual Product Format: Downloadable PDF 👋 Introduction Market Position Vehicle Class: Mid-size SUV (Off-road focused) Competitive Analysis Key Competitors: Jeep Wrangler, Toyota FJ Cruiser, Nissan Xterra Key Features Vehicle Usp: Robust off-road capability, distinctive Hummer styling, powerful engine options Manual Value Proposition Target User: DIY mechanics, enthusiast owners, independent repair shops 📋 Manual Details Coverage Areas Overall Coverage: Complete factory service, repair, and troubleshooting Page Count Estimated Pages: Hundreds (detailed with photos & diagrams) Manual Type Type: Professional Workshop Manual Language Language: English Format Digital Compatibility: Windows and MAC computers, tablets, smartphones 📖 Manual Coverage Systems Covered Powertrain: Engine, Transmission (Manual & Automatic), Drivetrain, Exhaust System Chassis: Suspension (Front & Rear), Steering System, Brakes (ABS & Non-ABS), Wheels & Tires Electrical: Body Control Module (BCM), Powertrain Control Module (PCM), Lighting, Instrumentation, Audio System, HVAC Controls, Safety Systems (Airbags, ABS) Body: Exterior Body Panels, Interior Trim, Doors, Hood, Tailgate, Glass, Seats Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, lubrication Repair And Overhaul: Engine rebuild, transmission overhaul, brake component replacement, suspension repair, electrical component diagnostics and replacement Troubleshooting: Diagnostic procedures for common and complex faults, symptom-based troubleshooting guides Technical Depth Depth: Step-by-step instructions, detailed photos, exploded diagrams, torque specifications, wiring diagrams, diagnostic trouble codes (DTCs) 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Printable (single pages or entire manual) Binding Type Binding: Digital (no physical binding) Paper Type Digital Resolution: High-resolution for clear viewing of images and text Licensing Usage License: Lifetime use on unlimited devices, no expiry or renewal fees ⚙️ Engine Specifications Primary Engine Engine Code: LL8 ( Vortec 3700 ) Configuration: Inline-5 Cylinder, DOHC, 20 Valves Displacement: 3.7 Liters (3700 cc) Performance Horsepower: 242 hp @ 5600 rpm Torque: 242 lb-ft @ 4600 rpm Fuel System Induction: Multi-port Fuel Injection (MPI) Engine Oil Recommended Oil Type: SAE 5W-30 Synthetic Blend (API certified) Oil Capacity With Filter: 5.5 US quarts (5.2 Liters) Cooling System Coolant Type: Dex-Cool (Orange) Extended Life Antifreeze/Coolant Coolant Capacity: 12.2 US quarts (11.5 Liters) 🔧 Transmission Standard Transmission Type: 5-speed Manual (M30/MY9) Optional Transmission Type: 4-speed Automatic (4L60-E) Features Drivetrain Options: 4WD (Full-time, electronically controlled with 2-speed transfer case) Automatic Fluid Automatic Transmission Fluid Type: Dexron-VI (GM P/N 88862472) Automatic Transmission Fluid Capacity: Approx. 8.3 US quarts (7.9 Liters) Manual Fluid Manual Transmission Fluid Type: GM Synchromesh Transmission Fluid (P/N 12346190) Transfer Case Fluid Transfer Case Fluid Type: GM Auto-Trak II Fluid (P/N 12378508) Transfer Case Fluid Capacity: 1.8 US quarts (1.7 Liters) 📐 Dimensions Exterior Wheelbase: 113.0 inches (2870 mm) Length: 187.5 inches (4762 mm) Width: 81.2 inches (2063 mm) Height: 77.4 inches (1966 mm) Interior Passenger Volume: 97.7 cu ft (2766 L) Cargo Cargo Volume Behind Rear Seat: 23.0 cu ft (651 L) Cargo Volume With Rear Seat Folded: 62.1 cu ft (1758 L) Weights Curb Weight: Approx. 4,760 lbs (2159 kg) Towing Max Towing Capacity: 5,000 lbs (2268 kg) 🛡️ Safety Features Ratings NHTSA Front Driver Impact: 5 Stars NHTSA Front Passenger Impact: 5 Stars NHTSA Side Driver Impact: 4 Stars NHTSA Side Passenger Impact: 4 Stars NHTSA Rollover: 4 Stars Active Features Traction Control: Standard Electronic Stability Control: StabiliTrak (optional) Anti Lock Brakes: Standard (4-wheel disc) Passive Features Airbags: Frontal, Side-Curtain 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD with available premium audio, SiriusXM Satellite Radio, and auxiliary input. Navigation: Optional factory navigation system Driver Assistance Parking Assistance: Rear parking assist sensors (optional) Connectivity Auxiliary Input: Standard on most models for audio device connection. 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles (12,000 km) or 6 months Air Filter Replacement: Every 45,000 miles (72,000 km) or as needed based on inspection Spark Plug Replacement: Every 100,000 miles (160,000 km) (with Iridium-tipped spark plugs) Coolant Flush Replacement: Every 5 years or 150,000 miles (240,000 km) Fluid Specifications Brake Fluid Type: DOT 3 Power Steering Fluid Type: Dexron III-H (GM P/N 12345899) or equivalent Known Issues Common Complaints: Water pump leaks, HVAC blower motor failures, dashboard creaking/rattling, transmission shifting issues (automatic). Durability Notes: Generally robust powertrain, but off-road use can accelerate wear on suspension and drivetrain components. 📚 Vehicle History Brand Heritage Brand Origin: Hummer was originally a brand of off-road vehicles, developed from the HMMWV military vehicle. Model Evolution H3 Introduction: The Hummer H3 was introduced for the 2006 model year as a smaller, more affordable, and more fuel-efficient alternative to the H1 and H2. H3 2007 Updates: For 2007, the primary update was the introduction of the Alpha model with a V8 engine, along with minor interior and exterior refinements. Production Manufacturing Location: Shreveport, Louisiana, USA (GM's Shreveport Assembly Plant) Ownership Gm Acquisition: General Motors acquired the Hummer brand in 1999 and launched the H3 in 2005. 🏆 Awards &...