Interiors lights and cig lighters don't work fuse is okay

https://www.google.com/search?q=cig+lighter+fuse+panel+on+92+gmc+half+ton&biw=1361&bih=650&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwj_--aUpbvQAhUE4yYKHTvTBg4QsAQIKw

Hope this helps

It might be thye fuse for cig lighter or cluster. Does your dash lights work ok? Does lighter work ok, clock. You may have to take all the fuses out one by one and look at them You will be able to see if they are burned out just by looking at it

It is the same fuse as the courtesy lights and cigarette lighter. It may be in the interior fusebox or the exterior one.

Applicable fuses:

Under-hood fuse relay box: 7.5A BACK-UP RADIO fuse 56, 20A INTERIOR LIGHTS fuse 67

Under-dash fuse relay box: 10A ACC RADIO fuse 4, 20A BOSE SYSTEM fuse 9

If all of these are fine, everything should be working

I don't see a power connection to the three components. The interior lights are on a 20 amp courtesy fuse, the cig lighter should be on a 30 amp ACC fuse, and the mirrors are probably powered thru the key on a different 30 amp ACC fuse.
The only common factor would be a ground connector somewhere.
If they all died at the same time, a ground problem would be my guess.

check the fuse box, look for the acc fuse, others have interior fuse that concerns the radio, lights, panels, and that cigarette lighter... or maybe your cigattere lighter is busted...

check fuse for dome and cig. lighter

These items clock, radio, dash lights are usually fused on the same circuit. Please check the fuses for this problem. The fuse or fuses should be listed on the fuse box cover inside the interior fuse box. Replace the blown fuse if that is that problem. If it blows again, then the cig lighter circuit may be involved. Make sure the cig lighter is free of any objects, remove lighter, (push in part). Try new fuse while lighter is out, and if problem goes away, push in may be bad.

cig lighter fuse is labeled accesory or interior lights. try that and the block is usually under the dash on the driver side.

two relays were bad one for the interior light and cig lighter and the other for the headlights