General Motors Atlas engine
…and is used in the Buick Rainier, the Chevrolet TrailBlazer and Colorado, the GMC Envoy and Canyon, the Hummer H3, Isuzu Ascender and i-370, and the Saab 9-7X. The engines use GM's Vortec name, with straight-4, straight-5, and straight-6 engines all part of the same family, sharing the same manufacturing…