The Hummer H3 is classified as an SUV or Sport Utility Vehicle as is manufactured by the Hummer division of General Motors. Production of this vehicle started in 2005 and ended in 2010. The first version of this vehicle was introduced as the 2006 model and was based on the GMT355 underpinning which was used by a number of other vehicles, including the GMC Canyon and the Chevrolet Colorado pickup trucks, all of which were produced at Shrevport Operations in Shrevport, Louisiana. The H3 is known as being the smallest of the Hummer models as well as the only one to ever be built by GM.
When the H3 was released, it was available with a 3.5 liter straight-5 cylinder L52 engine that was capable of producing up to 220 horsepower as well as 225 pound-feet of torque with a 5-speed manual transmission or an optional Hydra-Matic 4L60-E 4-speed automatic transmission. In 2007, this engine was effectively replaced by a 3.7 liter LLR that was capable of producing up to 242 horsepower and 242 pound-feet of torque, though the figures for this engine were eventually revised in 2009 to 239 horsepower as well as 241 pound-feet of torque.
When the 3.7 liter engine is equipped with either transmission, it offers a fuel economy of 14 mpg (U.S.) in the city and 18 mpg (US) on the highway with a combined average of 15mpg. This vehicle was available only with an automatic transmission as well as a 5.3 liter LH8 V8 engine which can produce up to 300 horsepower and 320 pound-feet of torque for the 2009 Alpha model, which offered a slightly lower fuel economy, coming in at 13 mpg in the city, 16 mpg on the highway, and a combined amount of 14 mpg.
The H3 used a 2-speed, electronically controlled full-time 4-wheel drive system which allowed it to be used for both on and off-road driving. Electronic locking front and rear differentials were offered as an option and not a standard feature for this vehicle. Similar to the Hummer H2, the H3 can take on 24” of water at a speed of 5 mph and 16” of water at a space of 20 mph. The standard ground clearance for this vehicle is 9.7”. The maximum towing capacities for these vehicles are 3,000 lb for the straight-5 with manual transmission, 4,500 lb with the straight-5 with automatic transmission, and 6,000 lb with the V8 with automatic transmission. The Cargo volume with the second-row seats in the upright position came to a total of 25 cubic feet.
When it comes to safety, the Hummer H3 has a number of features, including electronic stability control or ESC, as well as anti-lock 4-wheel disc brakes, tire-pressure monitoring, and brake-controlled traction control. Side-curtain options remained as an optional feature until 2008 when they were made standard. This vehicle earned a rating of “Acceptable”, which is the second highest possible rating, from the Insurance Institute for Highway Safety.
When it came to how the H3 scored with the National Highway Traffic Safety Administration, it earned a 5/5 star rating for frontal driver, 4/5 star for frontal passenger, 5/5 score for side driver, 5/5 score for side rear passenger, and 3/5 for AWD rollover. The Hummer H3T is classified as a mid-size pickup truck and was made available for the 2009-2010 models. This vehicle initially displayed as a regular cab or 2-door concept truck in 2003 at the Los Angeles Auto Show in 2004. There was also a 5-passenger 4-door crew-cab version of this truck that was displayed at the Chicago Auto Show in 2009, and it was garnered a lot of attention from the public.