The 2005 chevy colorado engine has a flexible selection of engines designed to fulfil a variety of driving needs. The standard 2.8L 4-cylinder engine is suited for everyday use, providing consistent power and high fuel efficiency. For customers looking for more power, the 3.5L 5-cylinder engine offers improved hauling capability and more horsepower. Both engines come with either a 5-speed manual or a 4-speed automatic gearbox, giving drivers more options.