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:
CD Messages
CHECK DISC: If an error message displays and/or the
CD comes out, it could be for one of the following
reasons:
• It is very hot. When the temperature returns to
normal, the CD should play.
...
Safety Belt Reminder Light
When the key is turned to RUN or START, a
chime will sound for several seconds to remind
you buckle your safety belt. The driver safety belt
light will also come on and stay on for several
seconds ...
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. Sa ...