An ignition coil takes voltage from the battery and multiplies it to create a spark at the spark plugs, which in turn ignites the engine. Cars have been using some form of the coil ignition system for ...

WASHINGTON/DETROIT (Reuters) - Among the most critical unanswered questions in General Motors' mounting crisis over a defective ignition switch that led to crashes and at least 13 deaths is who, eight ...

DETROIT, March 10 (Reuters) - In her first big test as General Motors Co's GM.N chief executive, Mary Barra has taken a hands-on approach behind the scenes in directing the automaker's response to ...