I noticed a roaring noise while driving the vehicle several months before taking it in to the dealer i went to barkley cadillac gmc in tuscaloosa alabama and was told that the rear end had a problem and needed to be replaced.
First in line while stopped at a left-turn light on a city street. light turned green, began to accelerate. mid-way through the turn, heard a "pop", lost steering control, and the rear end spun car into the curb. keep in mind this is a 4-wheel-drive car. when the car came to a stop, the nose of the car was resting on the front passenger tire and wheel. the right-rear wheel was scratched and abraded all around because it was still spinning when it hit the curb. the front right wheel has damage only on half of it because it stopped spinning when the nose dropped onto it. looking under the car i saw the front-right lower control arm broke in mid-turn. in addition to front right suspension damage, vehicle received damage to right rear suspension. no damage to body from the incident. gm had a representative inspect the car and pull the "black box" data on october 8, 2015. maximum speed during the incident was 38mph. were able to jack up the car. front wheel hanging loose and easy to move by hand. strut/shock/sprint tower attachment broken at wheel hub behind brake disk. front 4-wheel-drive-axel broken. anti-roll bar linkage broken.