Striking General Motors workers in Flint, Michigan scored a small victory today, as their walkout at an AC Delco plant forced the temporary closing of a nearby truck plant that was running short of components. GM furloughed 3,100 workers at the truck factory. The Delco plant produces spark plugs, filters, cruise controls and other parts for the industry's Big Three. "Today's automobile factory is living off day-to-day, shift-to-shift inventories," says TIME Detroit bureau chief William McWhirter. "One walkout can shut down everyone else." Negotiations between the two sides continued today. The United Auto Workers union predicts that if the walkout continues, dozens of GM factories nationwide will halt production within the week.