See also:

Auxiliary Devices
The vehicle may have a 3.5mm (1/8 in) auxiliary input jack located on the lower right side of the faceplate and for vehicles with a USB port, it is located in the instrument panel storage area. ...

Navigating an iPod or USB Device on the Music Navigator Screen (Vehicles with a Navigation System)
1. Press and release or to select the next or previous track within the selected category. 2. Press and hold or to move quickly through the tracks within the selected category. 3. Press and re ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...