This story was originally published on WardsAuto. To receive daily news and insights, subscribe to our free daily WardsAuto newsletter. Dive Brief: General Motors’ Q3 net income tumbled 57% year-over-year fueled by tariffs, which cost the company $1.1 billion during the quarter, the automaker reported Tuesday. Profits also were affected by the automaker’s revised electric vehicle strategy to scale back production amid cooling demand, according to CEO Mary Barra.  However, GM’s quarterly setback could p ...