Under the Hood

Both the four-cylinder and V-6 engines use direct-injection technology. An Eco mode, which is activated by a dashboard button, alters drivetrain calibrations in the four-cylinder to maximize fuel efficiency. Other mechanical features include:

Four-cylinder displaces 2.4 liters and makes 182 horsepower
V-6 displaces 3.0 liters and makes 264 hp
Standard six-speed automatic transmission
Both engines use regular gas

    See also:

    Powertrain details
    The GMC Sierra All Terrain HD concept is propelled by the new, production 6.6L Duramax turbo-diesel V-8 and Allison 1000 six-speed automatic transmission powertrain combination offered in the 2011 ...

    Muting a Call
    During a call, all sounds from inside the vehicle can be muted so that the person on the other end of the call cannot hear them. To mute a call, press , and then say “Mute Call.” To cancel m ...

    Odometer
    The odometer shows how far the vehicle has been driven, in either kilometers or miles. ...