Quadrasteer™ is an electro-mechanical rear steer system that turns the rear wheel to produce four-wheel steering. The rear wheels turn as a percentage of the front wheels up to a maximum 12-degree angle. The angle is based on vehicle speed and steering wheel turn.
At high speeds, the four wheels turn in parallel to provide better control of the vehicle through lane changes and sharp curves. At low speeds, the wheels turn in opposition, dramatically shortening the turning radius and making towing and parking a breeze.
"This concept is GMC's latest expression of an authentic professional grade truck, with capabilities that will certainly exceed consumer expectations," said Lynn Myers, Pontiac-GMC General Manager. "We're very excited about this concept, and I think when people see all this truck can do — coupled with the fact that it gets up to 15 percent better gas mileage — they'll be excited, too."
