Cluster Dimmer Issues

[dascenc]

I've had my 15 LTZ for three weeks when I noticed that occasionally the dimmer switch will not control the cluster brightness. With the headlights on I can toggle the switch all day and the cluster and stereo screen stay at the same intensity but the AC buttons do change in brightness as intended.

 

It's an intermittent problem that couldn't be replicated at the dealership. They reflashed the software and said no issues were found, but it started up again as soon as I left. (lucky me it was right at closing time so I couldn't go back). I took a video (which I can't upload from mobile) and will be going back soon, but I'm wondering if anyone else has had this issue.

 

Furthermore when this issues happens with the dimmer switch the stereo volume automatically adjusts itself to a new level and seems to go flat in tone. Any input or workaround would be appreciated.