I have a 2008 Chevy Cobalt. When I start it from a cold start, it sounds fine, then, about 15-20 seconds in, there is a loud, short (I don't think it's even a second) grinding noise, then it sounds fine again. The noise is preceded (from start up) by a slight whirring noise that I would never have noticed other than the fact that it disappears right after the grind. The car does not make this noise if it is warm. Any ideas?
Monday, July 16th, 2012 AT 12:50 AM