General Motors Appoints Deborah Wahl to CMO

General Motors said Thursday that, for the first time in seven years, it has a chief marketing officer. The auto manufacturer promoted Deborah Wahl to the head marketing role after about 18 months as Cadillac's CMO. Wahl knows her way around Detroit, as she was Chrysler's CMO from 2007-2009 after working her way up through...