Formerly built in Ontario, the Chevrolet Silverado/GMC Sierra do is now assembled in the United States. The available engines go from 195 horsepower (4.3-litre V6) to 403 horsepower (6.2-litre V8), and it will take a potential buyer several hours to go through the maze of possibilities (various cabs, box lengths, power train, differential ratios, etc.). The Denali is the most luxurious version, while the Hybrid is the greenest and should be more popular that it is.