this has been a known issue for a while,actually is not even power steering as you know it,its electric steering,if you ever get a chance peek under the steering wheel of a cobalt,you will see what looks like a giant windshield wiper motor,thats the power steering,what happens is after 30k the internal oil leaks out and the damn motor overheats,funny when the customer comes in and says they cant seem to find the power steering fluid and you tell them they dont have any its electrical,do people even research what they purchase any more?