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All dash lights not working

jonboy1919
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jonboy1919 New Member

jonboy1919

Posted
Posted

I just bought a 2006 Silverado LTZ 3500. Test drove it in the daylight, after purchasing and taking it on its first after dark run, I noticed all of the dash modules lights and instrument cluster lights do not function. Turns out my instrument cluster has been rebuilt at some point, all steppers are X27. I’ve tested every fuse on the truck and all are functioning. I replace the headlamp module which has the dimmer rheostat, but that did not work to solve the problem. Have any of you ever had this problem and if you’ve ever fixed it, please tell me how. Thank you in advance.


 

 

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James Elliott Enthusiast

James Elliott

Posted
Posted

I just bought a 2006 Silverado LTZ 3500. Test drove it in the daylight, after purchasing and taking it on its first after dark run, I noticed all of the dash modules lights and instrument cluster lights do not function. Turns out my instrument cluster has been rebuilt at some point, all steppers are X27. I’ve tested every fuse on the truck and all are functioning. I replace the headlamp module which has the dimmer rheostat, but that did not work to solve the problem. Have any of you ever had this problem and if you’ve ever fixed it, please tell me how. Thank you in advance.

 
 
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What do u mean by the cluster not working are they not lighting up or are the switches not working

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jonboy1919 New Member

jonboy1919

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All gauges work, but all illumination bulbs on the cluster and on the surrounding dash modules (ie 4wd, headlamp & climate) do not light up while driving at night.


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  • 3 months later...
Riptherev122809 New Member

Riptherev122809

Posted
Posted

I also have an 06 lbz silverado LT. I am having this exact issue with my truck as well. No dash cluster lights, no climate control back lights, no 4x4 indicator lights. I have checked fuses, wiring, back light bulbs, and have replaced the 4x4 selection switch, the headlamp switch, and the ambient light sensor. I still have the same problem. I have found the wire that supplies the 12v to the cluster, and am able to illuminate the cluster by sending 12v through this wire. I have also traced this wire to the bcm. I have run several tests, and have found this wire is not receiving 12v from the bcm. This is where I am at this point. Haven't given up, just keep looking for the next step.

davester Senior Enthusiast

davester

Posted
Posted

You have checked ALL the fuses?  I've found that non-obvious/related fuses can cause the BCM to not work right (as in, not power various items it drives).

Riptherev122809 New Member

Riptherev122809

Posted
Posted

Yes, i have checked all fuses. I am actually replacing the gear selector at the moment. Unrelated issue with the tow haul switch. But yes, all fuses look good and check good with a meter as well. 

Riptherev122809 New Member

Riptherev122809

Posted
Posted

Today I removed the BCM from 2006 silverado LBZ . I found some damaged components inside of the BCM. 

20190406_174742.jpg

20190406_180703.jpg

  • 2 years later...
clay296 New Member

clay296

Posted
Posted

Did your BCM repair cure the problem? Having the same issue 06 Duramax. Changed out all the little incandescent bulbs for blue LEDs...worked fine for a couple of days then quit working. All other dash lights work, just no backlighting. 

  • 4 years later...
davester Senior Enthusiast

davester

Posted
Posted

...just fyi, clay hasn't returned to the site since joining and making that one post, 5 years ago.  you aren't going to get a response from that user.

 

I would suggest starting with testing if the backlighting in the cluster itself works, and perhaps if the plug to the cluster is getting power & ground for the backlight circuit.

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