So at around 80K the engine light came on, I went to the dealership and they said that the catalytic converter was shot. Thankfully it is still under warranty. They replaced it. A day later the check engine light went on again...they scanned and told me that it was the O2 sensors. I got those changes at my mechanic and the engine light came back on, I took it back to the dealership and they said that it must be bad parts that I got. So I exchanged the O2 sensors and the engine light came on again. I took it back to the dealership and they said that now its the mass air flow sensor. so I paid them $185 to put it in for me. I had horrible customer service from the service manager John Svab at Frost GM in Brampton,Ontario and I called GM Canada to tell them my issues and they said they would look into the issues. I got a call back from GM Canada today and they said that the dealership has requested that I find another dealership to go to. I know. I can't believe that GM Canada would allow their dealerships to tell their customers that we don't want your business. The is mind blowing to me. I was supposed to be doing a oil consumption test with them and now they have said to do it at another dealership. I also know that converters should last the life of modern cars, and for this one to go so soon, there must be underlying issues. I asked them why my converter failed and they can't tell me why. They said that parts fail all the time. its a car and these things happen.