As Barra was testifying families of the victims and survivors of the crashes shared their heartache.
Robbie Buzard's son Trenton is paralyzed.
"My son has to live the rest of his life the way he is," he explained.
Candice Anderson was driving during the crash that killed her boyfriend.
"I was convicted of a felony when GM was the true criminal," she said.
It took GM engineers more than a decade to catch the problems.
"I can't speculate on why they didn't know," Barra said when asked about the delay, "but I can tell you now anytime a vehicle stalls we consider it to be a safety issue."
This house hearing follows an internal investigation that found negligence and incompetence.
GM fired 15 employees as a result, but lawmakers aren't satisfied.
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