cluster issues

[cavalieronyc]

i am either getting 4mpg or my fuel gauge does not work, i fill it up and the gauge goes to near FULL then 2 3 days later it drops very fast to 1/4 then near E also my odometer digital bulb is dark does show mileage but unreadable and air bag with seat belt red light in upper left corner never goes away.....

[J-Ri]

What year?

How much fuel are you adding to get it from 1/4 to full? You may have a fuel leak. It could be the fuel level sending unit or a related wire, a somewhat common problem on GM vehicles. Easiest way to check is with a scan tool that shows the fuel level sensor voltage. You can also check at the connector with a voltmeter.

The odometer backlight, I believe, is an LED which is soldered to the board. You'll have to remove the cluster and take a look. Some places will repair them.

For the seatbelt light, try jumping the wires at the sensor under the seat, might have a bad sensor.

[cavalieronyc]

Hi i had old original cluster with no tach and installed aftermarket sony stereo then had cluster odometer light bulb went out and fuel gauge is not accurate. i went and bought a 2004 Malibu RDS CD/Cassette radio deck and paid the local dealer 240 they used Tech 2 scanner for 2 minutes to unlock it. had all wiring checked, changed cluster to a 2004 cavalier with a tach and now the fuel gauge is bending backward hitting the temp gauge. need advice please help checked all fuses