The chief executive of General Motors Corp.'s large mortgage unit has suddenly resigned.

Mark L. Korell steps down as CEO of GMAC Mortgage Co. less than two years after he assumed the post and began a major expansion. The Elkins Park, Pa.-based unit has since become one of the nation's top 10 mortgage originators; Mr. Korell had said he was aiming for the top five.

Limited Time Offer

Save $400 off your subscription. Special offer ends April 30, 2017.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.