In a two-sentence filing with the Securities and Exchange Commission, GMAC announced that Chief Financial Officer Robert Hull had resigned. He has taken a job at private equity firm Providence Equity Partners.

“GMAC Financial Services today announced that Chief Financial Officer Robert S. Hull has elected to depart the company at the end of March to pursue another career opportunity,” according to the March 9 filing. “The company will conduct an internal and external search for potential CFO candidates in the interim.”

Hull joined GMAC in 2007 and was a member of the lender’s executive committee. Prior to GMAC, he held a series of finance positions at Bank of America beginning in 2001.

Two weeks ago Hull testified before a Congressional Oversight Panel about the U.S. government’s financial assistance under the Troubled Asset Relief Program.