. View photo A general view of the front entrance at the General Motors Assembly Plant in Arlington, Texas June 9, 2015. REUTERS/Mike Stone (Reuters) - The big three U.S. automakers - General Motors Co (GM.N), Ford Motor Co (F.N) and the U.S. operations of Fiat Chrysler Automobiles NV (FCAU.N) - reported a jump in September sales on Thursday as cheap gasoline and ultra-low interest rates drove demand for sport utility vehicles and pickup trucks. Strong demand for new cars and light trucks in the United States has been giving automakers a boost at a time when sales in China and other markets are slowing. Total U.S. auto sales, an early glimpse of consumer spending each month, are expected to have risen about 14 percent last month, according to auto industry consultancy Edmunds.com. Sales also got a boost... More