Jason Robertson

What setting did you change? This issue is only within the last few days and no settings have been changed within that timeframe.

2017 Denali 3500HD. Coming home from recent trip, noticed automatic headlights won't turn off in the daylight, dash stays dim and symbol next to speedo is present. I can manually turn them off but dash stays dim telling me the system thinks its still dark. I am using BT Diesels auto sync to reconfigure headlights to USA spec. The auto sync programming was removed and the unit unplugged and the headlights still won't turn off in the daylight. With key on engine off the headlights on this rig could be turned off even though it was Canada spec and the dash would always respond to night and day changes even though the headlights were always on. I have reached out to BT Diesel hoping he might have a solution or at least a place to start diagnosing. He is extremely busy and I hope to hear something from him later in the week, in the meantime was hoping maybe someone here has stumbled across this. Thanks in advance!