Cappellino Buick GMC

first before you trade in veichle do your homework I only checked 1 appraisal and almost lost 2000 dollars, salesman first said vehicle was in very good condition gave me a low value ,when I want more for trade proceded to tell how poorly constructed gm vehicles are,and basically my car was falling apart at 47000 miles.After raising the trade value slightly said he would go no higher so I countered offered ... and was told it was not possible to increase his offer 200 dollars,we left and received a call the next day that he was more than willing to accept my offer. This salesman lied to us several times and made this shopping experience the worst I have incounterd.I have purchased 10 new vechiles in the past ,so I am no rookie at this game ,we went down the street and purchased a new honda [elsewhere].