This comprehensive 2007 Hummer H3 Service and Repair Manual provides detailed instructions and information for maintaining, servicing, diagnosing, and repairing your vehicle. It covers all models and repairs from A to Z, offering the same information used by technicians at dealerships. The manual includes complete step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications to make repairs easier. You'll find information on a wide range of topics, including: * Maintenance: Routine maintenance procedures, schedules, and recommended fluids. * Engine: Detailed information on engine components, operation, troubleshooting, and repair. * Control System: Understanding and working with the vehicle's electronic control systems. * Mechanical: Comprehensive coverage of mechanical components including the transmission, drivetrain, suspension, and brakes. * Fuel Service Specifications: Information on fuel systems, injectors, and emission control systems. * Intake Exhaust Cooling: Understanding and maintaining the cooling system. * Lube: Lubrication specifications, oil changes, and fluid recommendations. * Ignition Starting Charging: Detailed information on the ignition system, starter, and charging system. * Auto Transmission Clutch: Information on automatic transmission maintenance and repair. * Manual Transmission: Information on manual transmission maintenance and repair. * Transfer Propeller Shaft: Detailed information on the transfer case and propeller shaft. * Drive Shaft: Information on the drive shaft and related components. * Differential: Detailed information on differential components, operation, and repair. * Axle Suspension: Information on axle and suspension components, including maintenance and repair. * Tire & Wheel: Information on tire sizes, maintenance, and wheel specifications. * Brake Control: Information on brake system control components and operation. * Brake: Detailed information on brake components, maintenance, and repair. * Parking Brake: Information on the parking brake system and operation. * Steering Column: Information on the steering column and related components. * Power Steering: Information on the power steering system and operation. * Air Condition: Information on the air conditioning system, components, and repair. * Suppl Restraint System: Information on the supplemental restraint system, including airbags and seatbelts. * Seat Belt: Information on seatbelt operation and maintenance. * Engine Immobilizer: Information on the engine immobilizer system and operation. * Cruise Control: Information on the cruise control system and operation. * Wiper & Washer: Information on the windshield wiper and washer system. * Door Lock: Information on door lock mechanisms and operation. * Meter Audio/Visual: Information on the instrument panel gauges and warning lights. * Horn: Information on the horn and its operation. * Windshield/Glass Mirror: Information on the windshield, window glass, and mirrors. * Instrument Panel: Information on the instrument panel components and functionality. * Seat: Information on seat components, adjustment, and repair. * Engine Hood/ Door: Information on the engine hood and door operation. * Exterior & Interior: Information on exterior and interior components, including trim, upholstery, and lighting. * Electrical: Detailed information on electrical components, wiring diagrams, and troubleshooting. * Multiplex/ Can Communication: Information on the vehicle's communication systems and networks. This manual provides complete and detailed information to help you confidently maintain and repair your 2007 Hummer H3.

## The 2007 Hummer H3: A Compact Off-Roader with Big Personality The 2007 Hummer H3 marked a departure for the Hummer brand, offering a more compact and fuel-efficient alternative to its massive H1 and H2 siblings. While still boasting the iconic boxy design and rugged off-road capabilities that defined the Hummer lineage, the H3 was significantly smaller and lighter, catering to a wider audience. Powered by a 3.5L Inline-5 or a 3.7L Inline-5 engine, the H3 offered a balance of power and efficiency, allowing it to tackle challenging terrain while remaining relatively economical for its size. This versatility appealed to consumers seeking a capable and stylish off-road vehicle for both daily driving and adventurous weekend trips. Beyond its capable engine options, the 2007 Hummer H3 offered several features designed to enhance its off-road performance. These included a solid front and rear axle, a two-speed transfer case, and the option for a locking rear differential. This combination provided exceptional ground clearance and traction, allowing the H3 to navigate uneven terrain with ease. The H3 also featured a surprisingly comfortable interior, despite its rugged exterior. With comfortable seating for five, ample cargo space, and a host of optional features such as a navigation system and a premium sound system, the H3 provided a well-rounded experience for both driver and passengers. While the 2007 H3 offered a unique blend of off-road capability, style, and practicality, its success was ultimately overshadowed by the brand's dwindling sales and the eventual discontinuation of the Hummer nameplate in 2010. Nonetheless, the H3 remains a significant milestone in Hummer's history, representing a shift towards a more accessible and consumer-friendly approach to off-roading.