There are light bulbs in the back of the gauges they can burn out
check all fuses and relays first, if it is not this it will be the fuel sending unit which should be in the gas tank
Check the fuses.
If the fuel gauge is not operating on your 1994 Cadillac Eldorado touring coupe, you might have an issue with the sensor or with the fuse for the fuel gauge. You will need to check your electrical system first.
Check your fuses in your fuse block you should have a fuse that says "gauges". If you fuses check good take it to a mechanic shop.
Check the button on the right side of the gauge cluster, if that still does not fix the problem check the relays under the hood marked "right retractor motor" and "left retractor motor". There are also fuses for the motors underneath the dash.
Check your fuses. That's the likely problem.
Check your fuses, if ok..You need to replace the sending unit for this gauge.
For the fuel pump,check your fuses and relays,go to your vehicles owner manual if you are not sure where they are located,usually the fuse block covers will show you what is what. And for the gauge,either the gauge is bad,of something has come disconnected from the connector at the fuel tank,or somewhere along the line. That or another fuse.
You temperature gauge could be not responding because of a faulty fuse. If you check your fuses and they work then you may have an electrical problem.
Check the fuses first!
ifr its just these and not the fuel info it looks like you need a cluster
Check the cable, check the fuses, check the tension on the dial.