I fill your pain brother. I have complied some info here https://www.facebook.com/ChevVibration/ Take a look and open a claim with BBB. I don't have a check yet, hopefully in a few days.
You will need to fight them and threaten, I was rejected 5 times. I would recommend an attorney that knows the process. With all of this info and if you can prove you have a problem they will buy it back.