See also:

Removing a CD or DVD
Press . The disc is pushed out of the CD/DVD slot. If the disc is not removed after it is ejected, it is pulled back in after a few seconds. ...

Navigation
This display is used for the OnStar or Navigation System Turn-by-Turn guidance. See OnStar Overview or the navigation manual, if the vehicle has navigation, for more information. ...

Engine Oil Additives
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all you will need for good performance and engine protection. ...