GMC Independence Day Sales Event TV Commercial, 'Precision'

GMC's Side Blind Zone Alert uses radar to detect obstructed areas on the road. Just by looking at the side view mirror, a mother driving a 2016 GMC Terrain Denali is able to change lanes and clear the path for a speedy oncoming car. It's true: Mom has eyes in the back of her head. GMC offers cash back incentives during the Independence Day Sales Event.