Programming question

[JWBFX4]

Ok so yesterday after driving about 15 miles, I stopped and decided to change the programmer to level 1 because I had about 400 miles of cruise on the interstate and no need for the higher octane gas. I still have the canned tunes right now. But heres my question when I went in to the programmer and selected the new level and hit enter,(with the ignition on) my truck beeped and I see on the digital message center it said "Check Gauges" I noticed my coolant gauge wasn't reading, but yet it was up to operation temp right before. But as soon as the programming finished it shot right back up to where it was and everybother gauge was normal.

So basically I was just wondering are all of yall seeing this while changing levels? I dont really see no problem with it, just made me a little nervous at first, and figured I would see if it normal. Thanks