Line workers work on the chassis of full-size General Motors pickup trucks at the Flint Assembly plant on June 12, 2019 in Flint, Michigan.DETROIT — General Motors has temporarily halted vehicle production at two U.S. factories that assemble highly profitable large pickups and SUVs due to impacts to suppliers as a result of Hurricane Helene.The automaker canceled shifts Thursday and Friday at a plant in Flint, Michigan, that produces its heavy-duty trucks as well as at Arlington Assembly in Texas, which pro ...