A U.S. safety regulator released new documents yesterday showing that General Motors Co. ordered a more robust ignition switch before the release of a new Cadillac, stemming from complaints the engine could turn off while driving when the ignition was bumped, the Wall Street Journal reported today. Delphi Automotive PLC, which made the defective switches used in 2.6 million small cars that are now being recalled, disclosed in a letter to U.S. regulators that GM engineers in February 2006 sought the change after test drivers reported the 2007 Cadillac SRX would stall when their knees bumped the ignition switch while driving.
