Hello,I will be glad to try and assist you with this,Welcome to Just Answer.
I did some quick research on this and didn't locate any problems ever seen with this on this vehicle.I personally have never seen this but the 2010 is a newer model so I haven't seen to many of these with problems just yet.
This might be something you may want to contact a dealer with to see if they had heard or seen this and GM as well,but from my searches I haven't found anybody else that has experienced this.
Here is a link to the Cadillac site which has contact emails and numbers as well.
I hope this helped,if you need anything else let me know,Thanks Pete!