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GM to modify Chevrolet Volts to guard against battery fire

General Motors will add a structural reinforcement and devices to prevent overfilling of the battery cooling system in the Chevrolet Volt hybrid sedan to prevent the possibility of a fire after a side crash. The changes come seven months after a Volt caught fire three weeks after being crash-tested by the National Highway Traffic Safety Administration. The government agency in November opened a defect investigation into the Volt because of the battery fire.

Detroit auto show: Autoweek editors' picks

The press conferences are over (our feet are killing us), our staff has stopped wrestling, and the ballots are counted. The 2014 Detroit auto show had dozens of never-before-seen cars and trucks gleaming under the Cobo Center lights. Here are the four we, the Autoweek staff, think stood out the most.

Chrysler, Hyundai set pace as auto sales rise 11 percent

Chrysler Group, Volkswagen Group, Hyundai and Kia set the pace as U.S. light vehicle sales rose 11 percent in January from a year ago, signaling the industry's recovery is gaining traction. Chrysler's sales advanced by 44 percent last month, and volume climbed 40 percent at the Volkswagen Group.