Former chairman and managing director of Holden Mark Reuss have been brought to America as president of the GM’s Northe American operations and will be in charge of a new sales division for GM’s North American brands. Meanwhile, the former sales and marketing boss, Susan Docherty, has been demoted as head the marketing division .

Reuss has only been president of North American operations since December, but he has already been given additional responsibilities due to what some speculate was a slow sales month for February.

GM’s new CEO, Ed Whitacre, promised that his sales and marketing team would produce results in a timely manner when he took the controls of the…

Director of global battery systems engineering for General Motors Denise Gray has announced at the conference call this afternoon that she is leaving the company to join a California-based battery start-up.

Gray was made director of battery engineering in 2006 with 25 people working with her. In her position, she had overseen all of the testing and development of batteries going into plug and non-plug versions of GM hybrids and extended-range electric vehicles. Gray also worked with battery suppliers to evaluate new cell technologies that may be used in production vehicles in the future. She was also one of the key people working to bring the Chevrolet Volt to fruition. Now,…