Henderson, 52, is joining Philadelphia-based Sunoco as a senior vice president, and will help prepare for SunCoke Energy to split Sunoco's metallurgical coke manufacturing operations away from its core oil refining and gasoline station businesses in the first half of next year. He will then assume the posts of chairman and CEO of SunCoke.
Henderson was named to head GM in March 2009, after Rick Wagoner resigned as chief executive following a nearly decade-long run. Henderson led GM through bankruptcy several months later, but was ousted late last year as complaints emerged that the automaker's turnaround wasn't moving along quickly enough.
He was replaced by former AT&T (T) CEO Edward Whitacre, who resigned the post effective Wednesday. Dan Akerson now holds the GM CEO position, and will assume Whitacre's other role of chairman by year's end.
Since leaving the GM CEO post, Henderson has continued to serve as a consultant to the Detroit-based automaker, the AP reported.