Lansing Grand River Assembly (LGA) is a General Motors Company, Inc. owned and operated automobile assembly facility located in Lansing, Michigan, United States. The Lansing Grand River Assembly complex began construction in 1999 and began operations in 2001.Lansing Grand River Assembly produces vehicles built upon the GM Alpha platform and the GM Sigma platform including the Cadillac ATS and the Cadillac CTS and CTS-V coupe, sedan and wagon.