U.S. lawmakers slam GM's 'culture of secrecy'

U.S. lawmakers on Wednesday slammed General Motors Co for a "culture of secrecy" and said a company investigation that found top executives did not know for years about a deadly ignition switch defect does not absolve them of responsibility. GM Chief Executive Mary Barra returned before a House Energy and Commerce subcommittee to face harsh questions about why the No. 1 U.S. automaker waited ...

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