Hendrick Chevrolet - Hoover

On my previous visit, a blonde lady convinced me to buy new tires. But she didn’t even give me the tires she said she would sell me. Then the back left kept running low and Pep Boys had to patch a brand new tire. They don’t even ride smoothly. On this most recent visit, I just got the oil change per my warranty package. I’m afraid to get anything major done. Sometimes my touchscreen goes black and the front end creaks a lot. I’ve been hearing a weird gurgling noise, like engine fluid for the past three months. I wanted to redeem my one component on the warranty, but I don’t know what it is. I have to leave it all day for diagnostics.