General Motors Co. will recall 249,260 midsize sport-utility vehicles to correct a potential fire hazard, a U.S. government safety agency said. GM, in a filing with the National Highway Traffic Safety Administration, said the recall affected 2006-2007 Chevrolet Trailblazer and GMC Envoy SUVs, as well as certain 2006-2007 Buick Rainier, Saab 9-7X and Isuzu Ascender SUVs. A possible electrical short could affect power windows and door locks, and in some cases could cause a fire, GM said. The recall involves vehicles sold or currently registered mainly in the Northeast and Midwest states. GM dealers will replace the driver's master power window switch on Chevrolet, GMC and Buick models. Saab and Isuzu owners can call the manufacturers' customer service centres.