Clock not keeping time zone.

I have the 11 Cruze with navigation. I subscribe to XM radio. After the last time change, I tried to roll the clock back an hour using the "clock" button and also tried it in the configuration settings. After the car is turned off, it is back to the one hour fast.
I'm in the central time zone and it acts like it is in the eastern zone. GPS works fine, so it knows where I am.

Any help?