Sergio Marchionne, the former chief executive officer of Fiat Chrysler and architect of the automaker’s dramatic turnaround, has died. He was 66. His death was confirmed Wednesday by Exor NV, the holding company of Fiat’s founding Agnelli family, just days after Marchionne was replaced as CEO. His health had declined suddenly following complications from shoulder surgery at a Zurich hospital. No other details surrounding his death were disclosed.

"Sergio Marchionne, man and friend, is gone,” Fiat Chairman John Elkann said in a statement. "My family and I will be forever grateful for what he has done,” said Elkann, who also is chairman and CEO of Exor. Selected as CEO of Fiat SpA in June 2004, Marchionne took the Italian manufacturer from the brink of bankruptcy to the New York Stock Exchange, where he rang the bell on Oct. 13, 2014, to mark the debut of Fiat Chrysler Automobiles NV, the London company created when Fiat bought the Detroit carmaker.