OnStar Services

See also:

Volume Control
VOL/ (Volume/Power): Turn clockwise or counterclockwise to increase or decrease the volume. ...

Manual Mode
Driver Shift Control (DSC) Notice: Driving with the engine at a high rpm without upshifting while using Driver Shift Control (DSC), could damage the vehicle. Always upshift when necessary while u ...

EPB Release
To release the EPB, place the ignition in the ON/RUN position, apply and hold the brake pedal, and push down momentarily on the EPB switch. If you attempt to release the EPB without the brake pedal ...