| Ad agency gains Buick, GMC after Cadillac loss Detroit Free Press, United States - The automaker said the change simply brings its advertising strategy in line with its retailing strategy to combine the Pontiac, Buick and GMC brands under ... |
| Ad agency gains Buick, GMC after Cadillac loss Detroit Free Press, United States - The automaker said the change simply brings its advertising strategy in line with its retailing strategy to combine the Pontiac, Buick and GMC brands under ... |