Purchased vehicle and have had problems with it ever since. Even if you have the heat on it blows out cold air until you move the temperature gauge up and down a few times and then it will kick in the heat. When you turn the thermostat all the way to high it makes a thumping sound so you can't leave the heat all the way on the hottest temperature. Very, very annoying.

All of a sudden got a knocking sound in the AC compressor. I took it to a third-party repair shop and he said if it gets worse bring it back. He said since everything is still functioning he'd recommend holding off on the repair. It's at its worst when idling at a light.