The first generation of the Isuzu D-Max pickup was developed in cooperation with General Motors on a shared platform with the Chevrolet Colorado. The vehicle featured a traditional ladder-frame construction, a live rear axle with leaf springs, and a choice of rear-wheel drive or part-time four-wheel drive. It was powered by 2.4-liter and 3.0-liter gasoline engines, as well as 2.5-liter and 3.0-liter turbo diesel engines, mated to either a 5-speed manual or a 4-speed automatic transmission. In 2006, the vehicle underwent a mild facelift affecting the exterior styling and interior layout. The primary markets were Asian countries, Australia (where it was sold as the Holden Rodeo and Holden Colorado), and the Middle East, with production centered mainly in Thailand.