Last year’s Colorado/Canyon was equipped with either a 2.8-liter four-cylinder engine offering 175 horsepower and 185 lb.-ft. of torque or a 3.5-liter five-cylinder that put out 220 horses and 225 lb.-ft. of torque. Transmissions included a five-speed manual or four-speed automatic. For 2007, the four-cylinder has grown to 2.9 liters and now boasts 185 ponies and 190 lb.-ft. of torque, while the five-cylinder jumps to 3.7 liters, registering 242 for both horsepower and torque. Transmission choices remain the same.