By Rachel Leven - 04/26/12 08:01 PM EDT
Rosenker joins General Motors with Hill, administration and private sector experience. She recently worked for Fleishman-Hillard as senior vice president.
She worked in the Bush administration before that as the Homeland Security Department assistant director of public affairs. Rosenker also worked for the Internal Revenue Service as the director of communications of the Small Business/Self-Employed division.