John Quattrone, who joined GM in 1975, will succeed Melissa Howell as senior vice president, global human resources.

GM did not immediately name a replacement for Selim Bingol, senior vice president, global communications and public policy.

Quattrone's appointment as human resources chief is effective immediately, as are the departures of Howell and Bingol, GM said.

(Reporting by Bernie Woodall; Editing by Franklin Paul)