General Motors (GM -2.3%) breaks lower after the company is accused of using emissions testing defeat devices in some trucks.
Bloomberg reports that a class action lawsuit againt GM was filed on the behalf of 705K GM Duramax owners.
The story is still developing.
Previously: Fiat Chrysler sued by U.S. government (May 23)
Previously: Fiat +3% as Sergio defends (May 24)
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