Possible abs sensor failure.
Is your speedometer not working? If your abs light or tracs light is on it may be the brake control module causing your speedo not to work.
If the ABS light is flashing it means the system is malfunctioning but still working. The dash light behind the speedometer is burnt out.
When the speedometer stops working and the ABS or traction disabled light comes on in a vehicle it indicates that the vehicle's ABS system is faulty. This could be indicative of a faulty wheel sensor or the ABS tracking system itself.
If the speedometer and abs light are not working then you have a speed sensor problem. If the speedometer or odometer are not working then you will need to take it to the dealership and have them send it off for repair.
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2002 Tahoe speedometer quit working and trans will not shift, ABS light on. NEW ANSWER: You need to have the engine and transmission scanned with an OBDII engine scanner so you can find out what speed sensor has gone bad / quite working.
You need to have the system checked for codes. You will probably find a code for a speed sensor.
some cars abs light comes on if your third brake light is not working. check and see if a wire is broken, ect.
speed regulator sensor needs replacement
this could be the cause of low brake fluid or that your foot is on the brake and it is indicating that the ABS is working.
this one in fairly simple, on most of the newer cars the speedo is driven off the abs sensor so all you need to do is get new abs sensor/s and that sould fix your problems It is located on the rear differential, facing the front of the truck
It means the ABS (Antilock Brake System) has a problem and is not in working order. Until the problem is fixed the light will remain on.