Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil.
The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
See also:
Courtesy Lamps
The courtesy lamps come on automatically when any door is opened and the
dome lamp is in the door position. ...
Operation
Controls
The infotainment system is operated by using the pushbuttons, multifunction
knobs, menus shown on the display, and steering wheel controls, if equipped.
Turning the System On or Off
...
Using Voice Commands
During a Planned Route
Cancel Route
1. Push . System responds:
“OnStar ready,” then a tone.
Say “Cancel route.” System
responds: “Would you like to
cancel route directions to your
destination?”.
2. Say “Yes.” Syst ...