2007 Chevrolet Impala Q&A

2007 Chevrolet Impala Question: I heard a grinding noise this morning when I turned the steeling wheel?

Now that its warmed up, I don't hear the noise? thanks, jk -
Answer 1
did it sound like plasyic rubbing together or metal? -
Answer 2
possible power steering pump -
Answer 3
Come to think of it , I can't hear it now either. .......Fluids expannnnd as they heeatt upp. Check fluid level.........When cold.. -