General Motors Co will recall nearly 4.3 million vehicles worldwide to fix a software defect that can prevent air bags from deploying during a crash, a flaw already linked to one death and three injuries.GM's action marked the latest large air bag-related recall in recent years by leading automakers, including a record earlier recall involving Takata Corp air bags and investigations into millions of vehicles this year involving two other air bag system suppliers. GM, the world's No. 3 automaker, said the latest recall involved trucks, cars and SUVs from the 2014 to 2017 model years, including some models of the Buick LaCrosse, Chevrolet Corvette, Silverado 1500, Chevrolet Tahoe, Suburban and Silverado HD and Cadillac Escalade.Despite the rash of problems with air bags in recent years, a spokesman for the U.S. National Highway Traffic Safety Administration sought to reassure motorists about the devices, saying "air bags save lives." The agency estimates that frontal air bags saved 2,400 lives in the United States in 2014, the most recent year for which figures were available. The NHTSA said in a notice posted on Friday that under certain driving conditions the air bag system would launch a diagnostic test that would prevent the air bag from deploying in the event of a crash. GM said the software defect would prevent deployment under certain "rare circumstances." Delphi Automotive PLC said in a securities filing that it supplied sensors and modules for the air bags but suggested it was not to blame, saying they were "in compliance with GM's product specifications and validation criteria." GM said it received a report in May of a crash involving a 2014 Chevrolet Silverado truck in which the driver's frontal air bag and seat belt equipment called pretensioners did not deploy.