 MiamiHerald.com | General Motors plant closures shock Flint-area residents who work ... The Flint Journal - MLive.com, MI The automaker announced today that the Pontiac Assembly Plant will close in October and Orion Assembly in Orion Township will be put on standby in September as it's considered as a possible manufacturing site for gm's future small car. ... Video: Local GM dealers Will a leaner GM succeed? GM to Shut 12 More Factories to Speed Bankruptcy Exit |