The Hummer H3 is a sport utility vehicle (SUV) from Hummer that was produced from 2005 to 2010. Introduced for the 2006 model year, it was based on the GMT355 underpinning the Chevrolet Colorado and GMC Canyon compact pickup trucks that were also built at GM's Shreveport Operations in Shreveport, Louisiana and the Port Elizabeth plant in South Africa. The H3 was the smallest among the Hummer models, and the only one to be built by General Motors.