Air bag light blinking
 

Good day all,
This morning when i started my 2008 silverado, i noticed that the trans temp gauge was not moving (stuck at 0), my air bag light was blinking, my transmission indicator was stuck on (P)park, and my driver seat belt light was illumiated. The truck was driving fine. I pulled over and turned the engine off for a few minutes, restarted, then it seemed to fix the problem.
Any ideas on what this could mean?
Any help will be much appreciated.

I need to add that I live in Nebraska, which means it was a whopping 2 degrees this morning. Could that have something to do with it?