The Hummer H3 is a SUV/Sport Utility Vehicle from General Motors' Hummer division produced from 2005 to 2010. It is based on the GMT355 underpinning the Chevrolet Colorado and GMC Canyon compact pickup trucks. Produced at GM's Shreveport, Louisiana factory in the USA, and the Port Elizabeth plant in South Africa, the H3 is the smallest among the Hummer models, and the first to be built by GM. It was available either as a traditional midsize SUV or as a midsize pickup known as the H3T.
The H3 featured a two-speed, electronically controlled full-time four-wheel drive system that made it suitable for both on-road and off-road driving. Maximum towing capacities were 3,000 pounds (1,400 kg) for the straight-5 with manual transmission, 4,500 pounds (2,000 kg) for the straight-5 with automatic transmission, and 6,000 pounds (2,700 kg) for the V8 with automatic transmission.
Robby Gordon competed in the 2010 Dakar Rally in a purpose built, tube frame chassis H3, finishing eighth overall.
At the end of February 2010, General Motors announced it would begin dismantling the Hummer brand. After filling a rental-car fleet order, the last Hummer H3T rolled off line at Shreveport on May 24, 2010.