2005 GMC Yukon XL 1500 Q&A

2005 GMC Yukon XL 1500 Question: Headlights, Dash lights, and Tailights turn off in auto mode AT NIGHT when idling

The dash lights, headlights, and tailights turn off after approximately 10-15 seconds when at a full stop idling AT NIGHT. Lights work normal in manual mode, and at driving speeds. The sensor has already been replaced, and it is still failing. -
Answer 1
you will need a good shop with GM software to diagnose this problem for you. you may have a faulty "convenience" module, but that's only a guess. -