GM closing 4 truck and SUV plants in North America

WILMINGTON — General Motors is closing four truck and SUV plants in the U.S., Canada and Mexico as surging fuel prices is hastening a dramatic shift to smaller vehicles

CEO Rick Wagoner said Tuesday before the automaker's annual meeting the plants to be closed are in Oshawa, Ontario; Moraine, Ohio; Janesville, Wis.; and Toluca, Mexico. He also said the Hummer brand may be discontinued.

Wagoner said the GM board has approved production of a new small Chevrolet car at a plant in Ohio and the Chevy Volt electric vehicle in Detroit.