Safety Belt Reminder Light
When the engine is started, a chime sounds for several seconds to remind a driver to fasten the safety belt, unless the driver safety belt is already buckled.

The safety belt light comes on and stays on for several seconds, then flashes for several more.
This chime and light are repeated if the driver remains unbuckled and the vehicle is in motion. If the driver safety belt is already buckled, neither the chime nor the light comes on.
See also:
Turning the System On or Off
/VOL (Power/Volume): Press to turn
the system on and off.
Automatic Switch-Off
If the infotainment system has been turned on after the ignition is turned off,
the system will turn off automatic ...
Your Responsibility
Increase the volume of the radio if the OnStar advisor
cannot be heard.
If the light next to the OnStar buttons is red, the system
may not be functioning properly. Press
and request
a vehicle ...
Sunroof
The vehicle may be equipped with a power sliding
sunroof. To open or close the sunroof, the
ignition must be turned to ON, ACCESSORY, or
Retained Accessory Power (RAP) must be
active.
Press and ...
