Great news! Did the OLS signal the oil change? We had the OLS in our previous Saturn, an L300, and we used it. I'm amazed at how different it is in our GL, though. We drive exactly the same commute, but the OLS seems to go much longer between changes. We have 7k since the last change, and the OnStar report said we have 53% oil life remaining!

Same boat here with the tires. We're quite happy with their performance, and see no excessive wear.

Did they also do the software updates on your GL?