We have a 2011 CTS. It was our understand that the service has been free. My husband called a few weeks ago and found out it the warranty runs another year. We were very pleased to here that. He made an appointment as he has done before to have it serviced. Yesterday he went in and they told him he needed his 30,000 mile service, and he would have to pay for it. He questioned them but they assured him that this 30,000 mile service was very necessary and it wasn't covered under the usual service aggrement that we had when we bought the car. Because we have done all our business with this dealership he assumed that that was right. Anyway the service cost over $1400.00. We are stunned. Is this an acceptable charge?