GMC Troubleshooting Questions? Ask a Mechanic for Answers
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
If this is the interior dash light assembly this can be caused by a fault with the dimmer switch itself.I have seen the dimmer switch fail before in the past needing replaced for issues like this here.If this was already tested or if it is more lights at fault then what the dimmer switch controls let me know.
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