I have a 02 silverado 2500 HD, my issue that has come to be is my dash illumination lights are not working now,
Gauges are working fine, headlights, turn sig etc are all working, just not illumination...im pulling my hair out here !!
took to a friends shop, says he tested the headlight switch etc....i dunno, i've taken most of the driver side dash apart
and cannot find anything obvious wrong, was working fine , then noticed on sat eve it wasnt comming on.......
any help would be appreciated !!
Thanx in advance

 

Are you talking about the backlighting on the instrument cluster or the backlighting on various control switches ie, heater/ac control, 4X4 switch, cargo/fog light switch?

 

I am new to this forum so I am not sure of the mechanics of how it works but I will try and attach three documents that should help. These are for my 1999 Silverado but still should be applicable to your truck. Looking at the drawings I would check fuse #14 (10A) in the LBEC located at the end of your dash, driver side. Remove the panel and look for fuse labeled "ILLUM" fuse #14. Another possibility but not probable is the bulbs in the instrument cluster are all burned out. There should six incandescent bulbs in the instrument cluster for backlighting. Maybe they all burned out at once but I doubt it. Also the connector on the instrument cluster are known to cause problems. Could be a bad connection there. See attached schematics. Hope this helps.

 

Tanin Auto Electronix here. We are vendors on the site and want to offer assistance. Though we can't diagnose without seeing the unit, we know we can help out. If you would like us to run diagnostics to see what the issues are, we have the link to that service here:

Diagnosis

If we determine that the cluster cannot be repaired, we locate replacements and program the correct mileage into them for customers all the time as well. Just give us a call at 262-456-4147 during regular business hours and we will help you out!