I was getting on the freeway and all of a sudden a lost power and heard a loud clunking noise. I drove as fast as I could to get in a safe area. Afterwards I had my vehicle towed to my mechanic. They said engine failure and possibly transmission failure. They found metal shavings in the oil. I had changed it myself a few weeks prior. I then took it to a gm dealer. I was just outside my powertrain warranty at about 70k miles. They said the same thing. 24k to repair. I had to junk the vehicle.