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Are you stating that this issue happened right after oil change and filter change?
All gauges are dead correct? Do the backlights operate when headlamps are activated?
That should not have caused this.....what all did you remove or do when trying to access the cabin filter?
You also said you checked fuses, did you check just condition or did you actually test for power? Did you check both fuse blocks?
Ok, just to recap and be sure I have a clear picture here EVERYTHING on the instrument cluster works EXCEPT the fuel gauge/tachometer/speedometer do not function correct? And the car will start and run....
Did you by chance fiddle with any of the wiring under the glove box that runs to the ECM?
Radio wiring is a prime suspect time aside.
Do you know how to read a wiring schematic?