WENTZVILLE, MO — General Motors is investing approximately $30 million in its Wentzville manufacturing operations to upgrade two presses in its stamping facility and improve overall production of GM’s full-size vans. With the investment, mechanical workings will be replaced by electronic systems on two AA3X transfer presses. The upgrades will begin later this year and continue through 2007. In the past five years, GM has invested $20 billion in its U.S. manufacturing operations. GM Wentzville Assembly built 173,600 vehicles in 2004. The assembly plant currently builds the Chevrolet Express and GMC Savana full-size vans. The GM Wentzville assembly plant, which was opened in 1983, currently employs approximately 2,580 employees. The GM Wentzville metal stamping facility, which was opened in 1997, currently employs approximately 120 employees.