AEM Brute Force Intake The Chevrolet Colorado and its counterpart, the GMC Canyon, are General Motors' mid-size pickup trucks introduced in 2004 to replace the compact pickup Chevrolet S-10 and GMC Sonoma. Isuzu, which participated in the design of the truck, began selling its own version in late 2005, named the i-Series. The Chevrolet Colorado was jointly designed by GM's North American operations, GM's Brazil operations, and Isuzu, based on the GMT355, itself the basis for the GMT 345-based Hummer H3. The vehicles are manufactured and produced at a GM plant in Rayong, Thailand, and in Shreveport, Louisiana.