See also:

Block the Wheel
Block the wheel that is diagonally opposite from the flat to keep the vehicle from rolling when the car is raised on the jack. ...

Put the Jack in Place
The base of the jack should be placed on firm, level ground. The jack should be positioned as shown in the drawing. ...

Rocking the vehicle
If it is necessary to rock the vehicle to free it from snow, sand, or mud, first turn the steering wheel right and left to clear the area around your front wheels. Then, shift back and forth betwe ...