General Motors plans to overhaul its North American sales operation by putting new executives in top positions.

The move indicates that Edward E. Whitacre Jr., who replaced Fritz Henderson as Chief Executive in December, is pushing for better results with his attempts to turn around the struggling automaker.

As part of the restructuring, GM North America President Mark Reuss will take responsibility for sales. He will replace Susan Docherty, a Vice President who had headed both sales and marketing in the United States.

"I could see clear as day that the mix and the structure of people just weren’t right. These changes were necessary for GM to move faster and win. We need people who are change agents", North America President Mark Reuss said.

Automakers sales reported that Ford outsold GM in the United States for the month and GM sales increased 11.5%.