You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract 'New' GM Leaner and Meaner, but Not by Much Automaker Still Has More Brands Than It Can Effectively Market By Jean Halliday, Published on August 17, 2009 27 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.