For the 2017 model year, the crown jewel of General Motors is offering ATS and CTS buyers with the chance to spruce things up. As the name implies, the Carbon Black Sport Package has been developed to enhance the exterior looks of both models.

For the 2017 Cadillac ATS Luxury and the Premium Luxury in sedan or coupe form, the Carbon Black pack includes goodies such as a front grille and a rear fascia applique with a black chrome finish, b…