DETROIT (AP) _ General Motors Co. is planning to announce details Thursday about the future of its technical center in the Detroit suburb of Warren.

Detroit-based GM said last month that it’s planning a major overhaul.

Mayor Jim Fouts has said that an unnamed business is considering a $1 billion investment that could create 3,000 jobs, but neither he nor GM has confirmed it involved the automaker.

GM says Fouts and Michigan Gov. Rick Snyder are among those scheduled to attend Thursday morning’s announcement.

GM’s technical center was built in the 1950s with low-rise buildings, several concrete lakes and miles of roadways. The company for years has wanted to upgrade the facilities to better compete for technical talent with Silicon Valley and other firms that have nicer workplaces.