I recently purchased a 2005 “certified” used Buick Rendezvous CXL with only 21000 miles. I have noticed that when I pull out of a parking space then straighten the wheel to go forward, there is a vibration or grinding sensation as I press the gas to go forward. This does not occur when making regular driving turns, just when starting forward after having pulled out of a parking space which requires that the wheel be turned more sharply. Any ideas? Thank you. S. Smith