We bought a GMC Sierra Denali 3500 at another dealership but live in Newton so we service it in Newton. Since I am the principle driver, I am the one dealing with the service manager and I'm female which doesn't seem to set well with the service manager. First time I brought it in because the steering wheel was becoming more and more "loose" and I didn't have control of the truck. He said nothing was wrong with it, "just getting broken in" and dismissed me. Next day I demanded they look at it more thoroughly and they found a nut in the steering column was coming loose!! First oil change they rotated tires but when we drove to Indiana to pick up our 5th wheel, we quickly realized they didn't readjust the air pressure!! I called and talked with the service manager. He could care less and argued that he asked the mechanic and was assured it was adjusted. Then why was it 80lbs in front and 60lbs in back? Later I took it in for another oil change and when I picked it up, I specifically asked if they adjusted the tire pressure after the rotation. The mechanic said yes and told me it was 80lb in back and 60lb in front. I went home and checked and it was 80lb in front and 60lb in back. I went back to the service manager and he didn't really care. He response was, "do you want me to go out and show you how to check the pressure?" Very condescending. He said he trusts the mechanics and if they say they checked, then they did. I asked for the general manager and spoke with John. He listened to me and confirmed the tires were incorrect. He apologized for the service manager. Thankfully, we are moving and I don't have to ever go back in there!!