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Houston • A Texas jury is now deliberating on whether a General Motors ignition switch was to blame for a 2011 accident that killed one driver and injured another.

Zachary Stevens and his parents have sued GM, claiming a faulty ignition switch in Stevens' Saturn Sky jostled off, causing him to lose control and hit another vehicle, killing its driver.

During closing arguments Thursday in a Houston courtroom, Josh Davis, one of Stevens' attorneys, told jurors the faulty switch shut off all the car's safety systems, including the air bags.

Mike Brock, an attorney for GM, said Stevens' reckless driving caused the accident.

More than 30 million cars have been recalled related to the ignition switch issue. GM says it has fixed the problem.