chevy tahoe

Anyone have an idea as to why my instrument lights won't work? The fuses check out OK but still no lights for any instruments or radio when headlamps are on. Thanks, TC

Blue Bowtie

Does that include the radio, heater/AC, and other accessory lighting, or just the instrument cluster?

If it is ALL the lighting, I'd suspect the dimmer control, or at least start measuring voltage there. If it's only the cluster, start looking at the connections for the cluster backplane.

cdc692003

sounds like dimmer control switch to me also....