2000 GMC Savana Van Owner's Manual - Page 252

yellowblue If You're Stuck: In Sand, Mud, Ice or Snow In order to free your vehicle when it is stuck, you will need to spin the wheels, but you don't want to spin your wheels too fast. The method known as "rocking" can help you get out when you're stuck, but you must use caution. CAUTION: If you let your tires spin at high speed, they can explode, and you or others could be injured. And, the transmission or other parts of the vehicle can overheat. That could cause an engine compartment fire or other damage. When you're stuck, spin the wheels as little as possible. Don't spin the wheels above 35 mph (55 km/h) as shown on the speedometer. 7. Make sure the tire is stored securely. Push, pull, and then try to rotate or turn the tire. If the tire moves, use the ratchet/wheel wrench to tighten the cable. You will hear two "clicks" when the tire is up all the way. 8. Return the jacking equipment to the proper location. Secure the items and replace the jack cover. 5-36