[Highland Park] =====Help needed to sell our car

Hi Neighboors, I need your suggestions. My husband and I must sell our car and we do not know how to go about it. Before we approach a dealer, we'd like to get acquainted with the approximate value of our car. The title indicates that it is a Cobalt Chevrolet 2009 - bought in December 2008 -color grey. It has 19.500 miles and the left rear view mirror is broken. Is there a way we can get this kind of information on line? Thank you for taking your time to help us. Your attention is deeply appreciated. Best, Marilena Betancourt