Only reason I am giving them 1 star is because the...

Only reason I am giving them 1 star is because the sales person was great. Sales managers on the other hand not so much. I bought a used diesel which I know you take chances buying used, But i was told it can with a 60 day 3,000 mile warranty that if anything happens to bring it back and they will fix it. Before i can drive it 1,000 miles or even make my first payment it through a code. I took it back to them and they said that that particular part is not covered. It was for the EGR cooler. Something that takes time to clog up. They wanted me to drop 4k into a vehicle I haven't even made a payment on yet. After lots of back and forth they agreed to fix it saying "once this is done i'm done with the truck. We will not fix anything else." Didnt think this is how a dealership works but i guess they do