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

2002 CHEVROLET 1500
110,000 MILES • 4.8L • V8 • 4WD • AUTOMATIC
Avatar
DR MAC 56
  • MEMBER
  • 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
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,840 POSTS
  • ASE Certified Mechanic
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.
Images (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Aug 18, 2022 at 1:51 PM
Avatar
DR MAC 56
  • MEMBER
  • 0 POST
Radio fuse okay. Probably is instrument panel cluster itself that needs rebuild.
Aug 18, 2022 at 2:16 PM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,840 POSTS
  • ASE Certified Mechanic
Yep, it is common for them to go out.
Aug 19, 2022 at 11:05 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.