Marketed by AM General in the United States in 1992, the Hummer was conceptualized from the American military vehicle called the Humvee. With the Hummer's commercial success twenty years later from the first two versions, the third one referred to as the Hummer H3 was manufactured from 2005 to 2010. The H3 was the first model manufactured by GM, and it's the smallest type among all Hummer models.
2005 - 2006: Introducing a compact yet still powerful vehicle
In 2005, the Hummer H3 was introduced with compact dimensions compared to its predecessor, and it was marketed as a midsize SUV. The H3 was 16.9 inches shorter than the H2's length, 6 inches shorter in height, and 6.5 inches narrower. It was also the first Hummer model to have an automatic transmission. The first set Hummer H3s were built with Vortec 3500 engines with dual overhead cams and variable valve timing. Although the H3 was marketed for street use, its system was electronically controlled by a full-time, four-wheel drive system that was designed for off-road driving. Features like fully locking rear differential, traction control, and underbody shielding were also added into its system.
2007 - 2008: Aiming for a more efficient ride with a new engine
An upgrade from the 3.5-L engine to the 3.7-L inline-5 arrived in 2007. The new engine brought an increase of 242 horsepower and 242 lb. ft. of torque. Also in the same year, the H3X was released. It was the customized version of the Hummer H3. It's equipped with customizable features like leather seats, chrome tube steps, and chrome fuel door. A security feature called the OnStar is an optional upgrade for the Hummer H3 and the H3X. It's a fully integrated GPS navigation system wherein a live advisor gives step-by-step audio directions.
The Hummer H3 Alpha was introduced in 2008 which featured a very powerful 5.3-L, 295-horsepower V8 engine similar to the small-block V8 engine of Chevrolet's Silverado pickup. The engine was designed to conserve more fuel and reduce emission. The addition of the Hydra-Matic 4L60 system made these automatic-transmission type vehicles driver friendly.
2009 - 2010: Returning to the bigger size similar to its predecessors
In its last year, the Hummer H3 had another version called the H3T. Returning to its powerful appeal, the H3T was bigger compared to the other H3 versions. It had a five-passenger crew cab and a five-foot long bed. Also, the H3T had four different trim lines, but the standard H3T was the most popular among them. The only feature added to the Hummer H3 in 2010 was the new colors of the body like red rock, silver stone, and canyon metallic. The final production of the Hummer H3 began on February 2010 in Shreveport, Louisiana.