AUTOS

Workers Strike GM Parts Plant: The action at the Flint, Mich., plant that makes spark plugs, filters and electronic parts for dozens of assembly plants threatens to disrupt North American auto production. Negotiators worked all night but failed to smooth out disputes over staffing and overtime at the AC Delco East complex, maker of parts for all Big Three auto makers. Talks resumed by afternoon between General Motors Corp. and United Auto Workers union officials representing the 6,800 striking workers. Workers contend GM has violated their contract by refusing to hire up to 500 workers to reduce overtime.