Chrysler's first ad campaign since its reorganization, a push for its overhauled Jeep Grand Cherokee, will hit this month. Chrysler chief executive Sergio Marchionne had denied dealers' requests to market Chrysler's new image, instead reserving ad spending to back new vehicles as they roll out. A Chrysler-boosting campaign "is unnecessary. You saw from the [U.S. auto sales] numbers that people are buying cars. They know we are back," he said.