The Cadillac DTS (DeVille Touring Sedan or D-Series Touring Sedan) is a full-size luxury notchback sedan that was produced by Cadillac. The DTS replaced the Cadillac DeVille as Cadillac's largest luxury car for the 2006 model year. This renaming followed new nomenclature conventions set by the earlier CTS and STS. The first version of the DTS was initially shown at the 2005 Chicago Auto Show on February 9. The DTS remained in production until 2011.