mike415

I have a 1998 GMC 1500 and the dashlights are not working I have taillights and running lights. The only light that works is the lights behind the dimmer switch and headlight switch and they will dim using the dimmer switch. I have no lights behind my tach,speedometer,and heat and a/c controls. I have checked the fuses and bulbs any other ideals thanks.

mike415

Anyone?

EinST

They almost always say "checked the fuses and bulbs." Which fuses and bulbs did you check? Was this a gradual thing (bulbs going out one at a time) or all at once? How long has it been going on? Anything aftermarket, electrically?

Texas1Redneck

You most likely have a electrical short out or it may be a fuse.
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2007 Chevy Silverado 2500HD 6.0L V8 4x4

mike415

I have "checked every fuse in the fuse box under the hood and driver side fuse panal checked all the bulbs behind the cluster and heat and a/c controls." I dont now how long its been like this I just bought the truck. It does have a aftermarket cd player that was in the truck when i bought it.

EinST

In that I/P fuse block (driver side), fuse #14 is upstream of the instrument illumination. With key on, parking lamps on, and dimmer control turned up, see what kind of voltage is present at that junction with a digital multimeter (or analog VOM, if you prefer). There should be two holes on the fuse for probing. Poke the red probe into the hole (or wrap a paper clip onto the end of the red probe and then poke the paper clip in). The black probe, of course, should be touching a suitable chassis grounding point. Hopefully I'm making sense to you.