Lol, I was waiting for someone to comment on the fuel gauge, I was actually just pulling into the gas station at the end of that video.
I thought it might be a short in the steering wheel too, but the steering wheel controls don't control items on the main display, only on the odometer display, also when I power off the radio, so that the main display shows only the clock, the issue goes away and nothing is affected, not even the odometer display.
In the video you can see the dash and certain lights, go dim and bright, this only occurs in the video not in real life. I thought it was just a resolution difference between my phone recording video and the displays in my truck, but the dimming stops half way through the video.
I've also disconnected bluetooth, just in case it may have been some app on my phone that was taking over, but the issue is still there, so its definitely the truck. if I had to guess is the media centre itself. What a piece of s**t, so frustrated with this right now, I'm honestly considering trading it in for something else.
I've been a loyal GM truck owner (this is my 5th truck in 14 years), but the fact that this is going on and other little annoyances with GM, such as their media technology being about 5-10 years behind everyone else is making me want to switch and try out another brand.