1996 Buick Century Owner's Manual - Page 205

I NOTICE: Spinning your wheels can destroy parts your of vehicle as well as the tires. If you spin the wheels too fast while shifting your transaxle back and forth, you can destroy your transaxle. For information aboutusing tire chainson your vehicle, see "Tire Chains'' inthe Index. Rocking your vehicle to get out: it First, turn your steering wheel left and right. That will clear the area around your front wheels. Then shift back and forth between REVERSE (R) and a forward gear, spinning thewheels as little as possible. Release the accelerator pedal while you shift, and press lightly on the accelerator pedal when the transaxle is in gear. If that doesn't getyou out after a few tries, you may need to be towed out. If you do need to be towed out, see "Towing Your Vehicle" in the Index. 5-39