By TOM KRISHER (AP Auto Writer) DETROIT (AP) — About 13,000 auto workers have walked off the job at three targeted factories after their union leaders couldn’t reach a deal with Detroit’s automakers. The United Auto Workers union is seeking big raises and better benefits from General Motors, Ford and Stellantis. They want to get back concessions that the workers made years ago, when the companies were in financial trouble. A small percentage of the union’s 146,000 members walked off the job at a GM assembly plant in Wentzville, Missouri; a Ford factory in Wayne, Michigan, near Detroit; and a Stellantis Jeep plant in Toledo, Ohio, at 11:59 p.m.