My vehicle is a 2005 Impala. The fuel gauge is not working correctly and I believe it is a stepper motor gone bad. The sending unit in the gas tank has already been replaced and all the electrical grounds have been cleaned. When the cluster is removed will the mileage actually be lost and have to be reprogrammed? My cluster has only three gauges (fuel, speedometer and temperature). Will my final cost be at $125.00 or will I see an extra charge to reprogram the odometer? You ask for the mileage on the service request. Is that just to verify a possible warranty or do you use it to reprogram meaning it must be as accurate as possible? I am ready to remove and send this cluster to be repaired. So your response is greatly appreciated in a timely manner. Thanks
Hi the gauge is controlled by a 9v power supply fitted to the dash control board this is were the speedo etc is fitted. if for any reason the power supply goes funny the fuel gauge will go wrong. there are 2 capacitors in the main board these keep the volts steady. when they were out you need to change them. as for losing info with the dash out this will not happen gauges work on power no memory same for speedo electronic milometer is a chip controlled so it store last miles. with power off for years. other problems that can make the fuel gauge go wrong is the cluster connection or the signal wires from the tank. a weak earth or a feed wire connection in the wire loom in the side of the wall that all the wiring goes to-to get to the back and the front of the car. hope this helps you with your problem
SOURCE: speedometer stays at zero on occasion skips
Common problem on the 05 Mustang instrument clusters, it's caused by failing stepper motors on the cluster's circuit board and it can be repaired. Check out this page for more on how to get it fixed - 05 Mustang speedometer problems
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