Drive down the street to another dealer, These guys put lipstick on pigs and lie about their used cars just to get a sale for the highest price.
My story, The truck I was looking to by was a 08 Avalanche after a few test drives I noticed the check engine light was on, I asked what was that about and he told me that it ran out of gas so the light was came on. So I leave and come back a few days later and the lights off and everything seems fine so I buy the truck and am happy with my purchase even though I think I overpaid a bit, about a month later I let the gas get below a 1/4 tank and then the truck was out of gas and I'm stranded on the side of the road, now I know they had to have known the gas gauge didn't work properly when it ran out of gas the first time but they decided to withhold that information when selling me the truck. They also use a company to fix rips and tears in the leather seats that only last about a week and now my seats look like a dog was trapped inside for a days.
Keep going you can find the same car someplace else don['t trust these guys they aren't here to help they just want the sale.