Before you begin any lifting procedure, be sure the vehicle
is on a clean, hard, level surface. Be sure all the lifting equipment meets
   weight standards and is in good working order. Be sure all the vehicle
loads    are equally distributed and secure. If you are only supporting the
vehicle    at the frame side rails, make sure the lifting equipment does not
put too    much stress on or weaken the frame side rails.
If you use any other lifting methods than those called out, take special
care not to damage the fuel tanks, the exhaust system or the underbody.