GM to build small Cadillac in Lansing

General Motors Co. plans to announce Thursday that it will build a compact-sized Cadillac at its Grand River Assembly plant in Lansing, a $190 million investment that will put 600 people to work, officials briefed on the announcement said.

GM CEO Daniel Akerson will make the announcement at the plant, joined by Michigan Gov. Jennifer Granholm, United Auto Workers President Bob King and three Michigan members of Congress.

The automaker is expected to call its new Cadillac the ATS. It will be smaller than the Cadillac CTS and similar in size to Cadillac BTS/BLS sold in Europe, according to a source familiar with the project.

GM spokeswoman Kimberly Carpenter declined comment Tuesday night.