This may sound strange from a guy who lives MOST of the time in (snow free) Florida, however I still drive in the snow when up in WNY and/or Roswell. I also have many years of driving in snow. One thing I've learned...........
DO NOT "ROCK" BETWEEN DRIVE AND REVERSE. This will do nothing except to ruin your transmission. If stuck in the snow, do the following........
1. Place in Drive (with our Genesis', place in the manual shift position and place in 2nd).
Give a very little gas and get the car as far forward as it will go without spinning the tires. Put foot on brake, and with car not moving,....
2. Place in Reverse, then again, give a very little gas and get the car as far back as it will go without spinning the tires. Put foot on brake and with car not moving,....
Repeat 1 and 2 above. DO NOT ROCK. After doing 1 and 2 a few times, you will find that the car will move a little more each time. It also helps if when stopped, you turn your wheels side to side, just to clear some of the snow from around the front wheels. Also used this method when I lived in Down East Maine. (I've lived in many areas with lots of snow).
One last thing, althought it does not have anything to do with getting out of a snow bank or when stuck. My father taught me to drive up North in February, and he taught me well. Don't do anything quick. Don't hit the gas hard, don't push the brakes hard, dont turn your steering
wheel (while moving) fast. Do everything slow and easy, and you won't get stuck in the first place (unless you are parked outside and the snow plows have you boxed in <grin>).
Again, if you Rock your car to get unstuck, you will blow your transmission!