So I noticed this problem a few days ago. My auto lights come on, my radio lights come on, and my DIC comes on but I don't get any cluster backlights, HVAC backlights or anything. Here is a list of what I have noticed.

-Radio backlights all still work
-DIC still works
-OnStar, reading lamps, power mirror still works
-Sunroof works
-Lighter still works

-No cluster light
-No HVAC light
-No boost gauge light
-No steering wheel control lights
-No window switch lights
-The dimmer does not adjust the DIC or Radio lights, I am sure that worked before.

I pulled the instrument cluster fuse and the inst. cluster, HVAC fuse but changing neither did anything. Any suggestions?

Anyone?

 

Theres atsb on this I think its a wire behind the radio that is causing this,have to see if I can find it.
#06-08-49-016B Instrument Panel Cluster (IPC) Backlighting Inoperative During Daylight Hours (Reprogram BCM) - (Sep 12, 2006)

 

I'm not really sure if that is it. Its not so much during the day as at night.