See also:

Playing from a USB (Radio with CD and Touchscreen)
A USB mass storage device or Microsoft Transfer Protocal (MTP) device can be connected to the USB port. The USB port is in the center console. The USB icon displays when the USB device is ...

ENGINE OVERHEATED — IDLE ENGINE
This message displays when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down. ...

Automatic Crash Response
In a crash, built in sensors can automatically alert an OnStar advisor who is immediately connected to the vehicle to see if you need help. ...