CEO The GM lifer was given 90 days by the board to show progress, but in Whitacre's account he did not act quickly enough.
Vice Chairman Whitacre was shocked that products czar Lutz, who had been lured out of retirement, seemed to have free rein -- including during board meetings.
President, GM North America The talented head of GM's North American operations rose from midlevel engineer to the second-highest job at the company in about a year.
Board member and CEO One of GM's hardest critics on the board. He did not volunteer for the CEO job until the last moment and insisted on being chairman.