Introduced for 2009, the Hummer H3T was created as mid-sized crew cab style vehicle inspired by the H2 SUT. Constructed on the same platform used for the Chevrolet Colorado and GMC Canyon mid-sized trucks, the H3T naturally accepted a five-foot bed box. The bed included an integrated bedliner and was constructed with built-in storage. Featuring standard full-time four-wheel drive with two-speed transfer case, the 2010 Hummer H3T was a utility vehicle that could easily handle off-road terrain. Hill Start Assist, StabiliTrak electronic stability control and four-wheel disc brakes with anti-lock braking system was included on the H3T as accompaniment for the four-wheel drive vehicle.
On the base, Adventure and Luxury trim levels of the 2010 Hummer H3T, a 3.7-liter five-cylinder engine provided 239 horsepower worth of motion. The five-cylinder engine could be combined with either a five-speed manual gearbox or a four-speed automatic transmission. For extra power, the 2010 Hummer H3T was also available with an Alpha trim model featuring a 5.3-liter Vortec V-8 engine mated with a four-speed automatic transmission. Producing 300 horsepower, the eight-cylinder H3T Alpha added compatibility to run E85 blended gasoline for 2010.
Maintaining a five-passenger capacity cabin, the 2010 H3T arrived with conveniences such as Bluetooth connectivity, power windows, cruise control and an audio system with CD player as well as satellite radio. On the Hummer H3T Alpha model, the interior featured a seven-speaker Monsoon premium sound system. The H3T was only produced for only two years ending with General Motors decision to discontinue the vehicle Hummer brand after 2010.