Check the fuses. Sometimes you have to remove and reinstall them.
First check the fuse for the 2003 Cavalier gauge. Next check the fuel sending unit in the fuel tank to insure that its working properly. Check the gauge next, then the wiring for the system. One of these units is causing your gauge to not work.
Check your vehicle speed sensor. It controls your RPM's and your Speedometer. Hope this helps.
If the speedometer is not working but the odometer is, I would suspect the dash cluster is at fault. If both speedometer and odometer are not working I would suspect the speed sensor on the transmission is at fault.
Numerous gauges not working at the same time are a power issue. The instrument cluster needs to be removes so that the wiring and circuit board connections can be tested.
could be a bad instrument cluster panel, they had a recall on the instrument cluster panel. I had my speedometer stop working and was given a price to fix it and blew it off. Then the recall came and I got a new instrument cluster and that fixed the problem which they knew they had.
There is not a cable for the speedometer. The information is sent to the gauge cluster from the PCM. The PCM controls almost all aspects of the vehicle operation. All of the information on the gauge cluster comes from the PCM.
If both the speedometer and odometer stopped working it is probably the speed sensor in the transmission gone bad. If only the speedometer quit you may have to replace the dash cluster with a reconditioned unit.
Have your mechanic check the speedometer cable connections. They no longer use a cable. It is electronic. If the speedometer is not working but the odometer is, the problem is in the dash cluster. If both the speedometer and odometer are not working, the speed sensor in the transmission may be at fault.
you need to replace dash illumination bulbs only problem the speedometer cluster has to be removed
Replace the gauge. This problem indicates an un-repairable failure inside the unit.
the dashboard cluster could have broken. That happened to my 2004 trailblazer and I had to get it replaced
There are several things that can cause your speedometer to stop working. The most common cause is a blown fuse. The second most common cause is a malfunctioning speedometer cable.