2003 S10 instrument panel problem
 

I changed my thermostat and now the speedometer, tach, fuel and temp gauges do not work. The battery and oil ones are still working. I checked for burnt fuses and there are none. It was a simple thermostat change that took about 20 minutes so what now? Any help is appreciated.

Did you disconnect the battery while changing out the thermostat?

no i did not disconnect

Try disconnecting the positive battery cable for about 10 minutes then reconnect it and see if it resets your gauges.