The plant currently assembles the Cadillac Lyriq, XT5, XT6, and Acura ZDX crossover SUVs for the North American market, and also includes powertrain, stamping and molding operations.

On January 7, 1985, Saturn Corporation was formed as a subsidiary of General Motors to compete with Japanese imports, and soon searched for a site for a manufacturing facility.

[4] A payment in lieu of taxes agreement was negotiated with the state in September 1985, and that same month the Tennessee Department of Transportation announced plans to construct State Route 396 (Saturn Parkway), a 5 mi (8.0 km) long controlled access highway that connects the plant to Interstate 65, at a cost of $29.3 million.

[9] Harbour Consulting rated the Ion line as the tenth most efficient auto plant in North America in 2006.

Changes include adding metal stamping and removing the plastics plant (the Saturn production lines used plastic-based panels).

[21] In October 2020, GM announced that it was investing another $2 billion in the plant to build electric vehicles including the Cadillac Lyriq.