I need help with tail lights

My rpm and speedometer and odometer all
stopped working on my 05 avalanche I also noticed
that right when this happened my passenger side
tail light stopped working but I still have break lights
and blinkers, I have replaced the bulbs couple times
in my tail lights and I still don’t have tail lights, I
have checked all the fuses got under the bed and
seen nothing wrong with the wires. can any one
help me figure this out