I found a fix to this accidentally. If you put the car in reverse long enough to engage the rear view camera display then go to drive it will return to night setting. If you skip from park to drive it gets bright. I am sure this is a glitch in the software but at least it's not so bright. Works...
Update
Dealership replaced the whole front wiring harness. It took them 3 days and repairs to the brand new harness that GM sent them because my hatch release wasn't working with the new harness. But i have it back now and so far it hasn't went blank since. Fingers crossed that the problem is...
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