DETROIT -- Christopher Preuss, the public relations executive who was tapped last year to steer General Motors Co.'s Onstar, is stepping down as president of the telematics unit.
Linda Marshall, who joined GM in November as executive director of OnStar's global business strategy and development, succeeds Preuss on Feb. 1, GM said in a statement today.
Before arriving at OnStar, Marshall was COO for Revol Wireless, a privately held Ohio company. She also has held senior executive-level jobs at Sprint Nextel and Verizon Wireless.
Former GM CEO Ed Whitacre named Preuss to lead OnStar in March. He had been GM's vice president of communications.
Preuss, 44, is leaving to start a communications consulting practice, GM said.
OnStar has been adding infotainment features in an effort to keep pace with other manufacturers' offerings, including Ford Motor Co.'s Sync system. Earlier this month, Preuss said OnStar will begin selling its systems in the aftermarket to owners of non-GM cars.