I have a 1992 chevy blazer tahoe. The lighted gas,battery,oil and radiator gauges went out. The mileage and speed gauges are still lit. I checked the fuses and they are okay. What next?

all fuses all boxes checked. cab and engine bay?
well we scan all modern cars first./ it will show DTC errors. like dead cluster communications? or?
do not skip scans on cars, or go broke guessing endlessly.for sure.

I used to own an '02 Tahoe.
Have you checked the oil? Is your dip stick bone dry? I've only had this happen to me on one vehicle in the past and the engine was out of oil and my engine had seized. Hopefully it isn't that.

Side note: Have you noticed that most Chevy Tahoes on the road look like they are winking at you? Seems like everyone ALWAYS had one fog/running light out under a headlight. I laugh when I see one coming my way.. I say, that's got to be a Chevy. Something is wrong with their electrical system to cause such a widespread failure.

You have so sort of wiring issue, check the battery supply to the fuse box under the hood, it may be corroded.

My 2001 Chevy Blazer did this too, until the fuel pump went and I had to replace it.

sounds like a computer problem or a ground issue, good luck

Check for a loose ground wire. My older S-10 had that and the wire was in sight by the left kick panel just under the dash.

Change the engine oil or top it up to the specified level if the oil is still good and not burnt. After such conditions if the engine oil level is low, it would be advisable to change it completely. Also check if water pump is able to circulate the water properly(see on removing the radiator cap while the engine is running). Clean all plugs as added safety and try...sodeep

if its not a fuse check the speed sensor for the tach, and the oil pressure switch on the side of the engine block see if the lead came loose

oil pump might be going bad

i own a 1991 chevy blazer myself but my problem is opposet of yours my back lights stay on well i went underneath the dash board an i look up underneath my steering column an i saw to components one was to my cruise control an the one in back of it was to my back lights an i moved this around an to my surprise my light swork good now but now my speed odometer doesnt not work an my gas gauge am my oil aa water gauge my power windows dont work an niether my a/c or heater defroster im jus wondering if i need to move this component alittke more to the left or right yesterday everything worked hmmmm