2015 Chevrolet Sonic, backup display worked perfectly until a few months ago now it is reduced in size and on the left there is an icon which appears to serve no purpose.
I took it it into the local dealer who played around with it but could not fix the problem, he then checked newer Chevrolets on the lot and they had the same reduced display.
This tells me that somehow an upgrade has taken place without me knowing about it, the dealer also could offer no solution. I don't like it and would like the full screen back, does anyone have any knowledge of this or experience the same thing?
(see attached screen shot.

 

163 views presumably quite a few by Sonic owners and nobody could say "mine's the same" or "never seen this"