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General Motors says a fire hazard has caused the company to recall a quarter million sport utility vehicles. The cars, which include some Chevrolet TrailBlazers and GMC Envoys, have a defect that may cause a short circuit in the driver’s-side door, the car manufacturer said. “A short may cause the power door lock and power window switches to function intermittently or become inoperative,” the recall says. “The short may also cause overheating, which could melt components of the door module, producing odor, smoke, or a fire.”