no illumination of instrument panel, odometer, and gear selection?

2002 CHEVROLET 1500
110,000 MILES • 4.8L • V8 • 4WD • AUTOMATIC
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DR MAC 56
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  • 1 POST
Replaced light /dimmer switch with no improvement.

Checked several fuses and all okay.

IGN 0, Cruise, IGN 1, ILLUM.

No instrument panel illumination. All interior cabin lights working. Several fuses checked and all ok.

Instrument panel Fuse Block.
IGN 0. OK
Cruise OK
IGN 1. OK
ILLUM OK

What else to check?
Thanks
Aug 18, 2022 at 10:12 AM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
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It could be the instrument cluster is having a problem and needs to be rebuilt which is common. This video can show you how, also let's check the cluster power and grounds before the replacement to make sure that is the problem.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

https://youtu.be/_HEC44xENxw

I noticed there is a radio fuse which also must be good for the cluster to work so please check that. Check out the diagrams (below). Please let us know what happens.
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Aug 18, 2022 at 1:51 PM
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DR MAC 56
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Radio fuse okay. Probably is instrument panel cluster itself that needs rebuild.
Aug 18, 2022 at 2:16 PM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
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Yep, it is common for them to go out.
Aug 19, 2022 at 11:05 AM