All Colorados now come with a turbocharged 2.7-liter four-cylinder that offers three levels of output. The new engine, in its more powerful forms, is meant to replace both the high horsepower of the old Colorado's optional V6 as well as the torquey grunt of the optional diesel-powered four-cylinder.
Chevy says to expect similar efficiency figures to the four-cylinder when those become available, which would be a coup given the added performance. All versions of the Colorado feature an eight-speed automatic transmission and cylinder deactivation under light loads, allowing the motor to run as a two-cylinder for decreased fuel consumption.
The base output version (called 2.7 Turbo) comes standard on Work Truck (or WT) and LT trims and produces 237 horsepower and 260 lb-ft of torque. That's a big boost over the old four-cylinder's 200 hp and 191 lb-ft. With this engine, the Colorado can tow up to 3,500 pounds.
A more potent version called the 2.7 Turbo Plus is optional for those two trims and comes standard on the Z71 and Trail Boss. In this application, the turbo 2.7-liter produces a healthy 310 hp and 391 lb-ft. That represents a minor bump of 2 hp compared to the V6 but a whopping 116 lb-ft increase in torque. Maximum towing capacity rises to 7,700 pounds with this powertrain, or 700 pounds more than the V6 managed. The Z71 and Trail Boss come with standard four-wheel drive, while the WT and LT have two-wheel drive standard with 4WD optional.
Topping the range is the 2.7 Turbo High-Output, which comes standard in the off-road-focused ZR2. It produces the same horsepower as the Turbo Plus but more torque, for a max of 430 lb-ft. Though this engine isn't currently offered in any of the other trim levels, Chevy says you can still get it if you have the Turbo Plus. All you have to do is take it to the dealership for a software flash that costs $395. So if you buy a Trail Boss and you decide you need that extra torque for off-roading or easier towing, it doesn't cost much to add it on and keeps your warranty intact as well.