Warning lights/ service lights- random

[Mabelongia]

Is anyobe or did anyone have an issue with your cluster lighting up with “service” warning/ flashing lights? I had every warning light up from the brake to no power steering. The dealership says it need to place a “black box” to have it replicated the issue because even with the codes they cant figure out the issue. I tried to ask them to look at the 48v battery because my battery voltage keeps dipping down ( 12.7-12.9 to 14v) but the steadily disagree with me with no evidence.

 

[HemiDude]

What year truck? Have you ever had the 12v battery replaced? Many guys are saying theirs was bad after 3-4 years, and a bad battery in these truck can cause similar issue to what you are experiencing.