About Hummer H3

Overview:

The Hummer H3, produced from 2005 to 2010, was a mid-size SUV that aimed to bring the ruggedness and capability of the Hummer brand to a more compact and manageable size. It was a unique and stylish vehicle with a focus on off-road performance and a rugged appearance.

Available Powertrains:

  • 3.5L Inline-5 engine: Produced 220 horsepower and 240 lb-ft of torque (earlier models).

  • 3.7L Inline-5 engine: Produced 241 horsepower and 241 lb-ft of torque (later models).

  • 5.3L Vortec V8 engine: Produced 300 horsepower and 320 lb-ft of torque (available on Alpha trims).

Transmission: 4-speed automatic transmission or 5-speed automatic transmission

Drive Type: Rear-wheel drive or four-wheel drive

Notable Features:

  • Rugged Design: The H3 featured a boxy and distinctive design with a high ground clearance, a large grille, and a muscular appearance that evoked its military heritage.

  • Off-Road Capability: The H3 was known for its capable off-road performance, featuring a robust chassis, a heavy-duty suspension, and a variety of optional off-road features, including a locking rear differential and a two-speed transfer case. The Alpha trim included a more aggressive suspension and a locking front differential for enhanced off-road performance.

  • Spacious Interior: The H3 offered a roomy interior with seating for five passengers and a decent cargo area.

  • Available SUT Model: The H3 SUT (Sport Utility Truck) offered a unique combination of a pickup truck bed with the SUV's styling, providing versatility for both cargo and passengers.

Common Problems:

  • Fuel Economy: The H3 was not known for its fuel efficiency, consuming a significant amount of gasoline, making it a costly vehicle to operate.

  • Engine Issues: Some owners reported engine problems, including issues with the cooling system, ignition system, or fuel delivery.

  • Transmission Issues: Some owners reported transmission problems, including rough shifting or occasional slipping, particularly with the automatic transmissions.

  • Suspension Problems: The suspension could experience premature wear and tear, especially on models subjected to off-road driving or heavy loads.

Hummer H3 PDF Owner Manual:

On this page, you can find the owner's manuals for the Hummer H3, sorted by year. The manuals are free to download and available in PDF format. It is recommended to check the owner's manual corresponding to the correct year of your Hummer H3 to solve problems or gain insights about the car.

Additional Information:

  • The Hummer H3 was a smaller and more maneuverable version of the larger Hummer H2, aimed at a wider audience who wanted a rugged and capable SUV with a more compact design.

  • It was a popular choice for those seeking a vehicle with a distinctive appearance and off-road capability.

  • The H3 was discontinued in 2010, with the Hummer brand itself being discontinued shortly after. However, the Hummer nameplate is now revived with the all-electric Hummer EV.