I took delivery late Friday 6/25/10 and have some questions: My previous GM vehicles came from the factory with the trailer light adapter plug...this one did not. Should it have? None of the steering wheel control switches illuminate...fuse or factory wiring defect. Anyone else run into this? The Navigation display keeps north at the top; it's wierd driving any direction other than north. Going south it shows the vehicle driving down. I looked in the manual and didn't see how to change it.