We leased our 2016 Suburban in early May of 2016, Only about a month later did we start to hear a squeak noise coming from the rear of the car. Every time we let the car coast (taking your foot off the accelerator pedal) and then pushing the accelerator pedal again their would be a very audible squeak sound from the rear of the car. We didn't think much about it but brought it to the dealers attention when we brought the car in for a recall. After a couple days they found that there were small parts in the muffler that had been broken and they replaced the muffler. We haven't gotten the car back yet so were not sure if this did resolve the issue.