MediaBuyerPlanner: General Motors is consolidating advertising for three of its brands by eliminating McCann-Erickson and Lowe, Lintas & Partners Worldwide, two agencies that had handled Buick and GMC advertising respectively.

The work will move to Leo Burnett, Detroit, which handles Pontiac, writes Brandweek.

Jim Bunnell, gm of Buick-Pontiac-GMC, said in a statement that while the company has made progress in aligning the three brands into a single channel, there is still work to do. "It's time to move to the next level and we believe that having one dedicated agency will help us get there effectively and efficiently."

GM spent $2.3 billion in media last year, according to Nielsen Monitor-Plus. Sales for the company are down 3.2 percent through May.

Related stories:

• General Motors Says 'Rethink American'
• TNS: General Motors Cut $600MM in 2006 Ad Spending
• GM Planworks' Rosen to Oversee Buying across All Media
• GM to Boost Digital Media Spending
• GM Yanks Sponsorship from 'Survivor'
• GM Ad Agencies Create New Group
• GM Cuts Ad Budget by $200 Million