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Pete, GMC Mechanic
Category: GMC
Satisfied Customers: 28814
Experience:  GM training and dealer tech for 14+ years. Diagnostics
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Dash lights dim on their own, No but that isnt it. Bulbs

Customer Question

Dash lights dim on their own
JA: Have you checked the fuses? The dashboard bulbs?
Customer: No but that isnt it. Bulbs either r or r not working same with fuses.
JA: What is the model/year of your GM?
Customer: 2006 GMC.
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes and not much. Just starting the investigation. Sounds like it a common issue. So someone should know the answer.
JA: Anything else you think the mechanic should know?
Customer: No
Submitted: 1 year ago.
Category: GMC
Expert:  Pete replied 1 year ago.

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.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete