Happened to my wife again today, she called on-star and ran a diagnostic check. They told her it was something with the brakes and scheduled an appointment on 2/14. Haven't received the e-mail from on-star yet, maybe it will be more informative.

 

G-man, same thing with mine, the encoder motor. 'cept I have to wait 5 working days for the part.

 

This will end up being a recall. The five that were in for repair the previous week were waiting on the part as well.