Hi - I just started seeing the same error / issue with the rear camera on my 2019 GMC Yukon XL- the display has Blue Screen with the message "Service Rear..". Appears that I am not alone and several of you are facing the same issue. Is it an easy fix.. something I can try doing (I am not that handy with repairs, so am a bit skeptical). or do i need to take the car to the GMC service center. Is it an expensive fix? or something that GMC thinks it should do for free given the commonality of the bug