See also:

OnStar®
If the vehicle has OnStar and you subscribe to the OnStar services, please refer to the OnStar Terms and Conditions for information on data collection and use. ...

Rocking Your Vehicle to Get It Out
First, turn the steering wheel left and right. That will clear the area around the front wheels. Then shift back and forth between REVERSE (R) and a forward gear, spinning the wheels as little ...

Rocking the Vehicle to Get it Out
Turn the steering wheel left and right to clear the area around the front wheels. Turn off any traction system. Shift back and forth between R (Reverse) and a forward gear, or with a manual transm ...