See also:

Overview
GMC announced the all-new 2007 Acadia. It is GMC's first crossover, delivering a smooth, responsive driving experience, athletic design, a spacious interior and a comprehensive safety package to t ...

StabiliTrak® System
The vehicle has a vehicle stability enhancement system called StabiliTrak. It is an advanced computer-controlled system that assists the driver with directional control of the vehicle in difficult dri ...

New for 2011
The Sierra Hybrid gets GM's OnStar 9.0 telematics system that GM says provides better voice recognition. GM also said they have worked to cut down on the amount of wind noise occupants hear. ...