Chevrolet Repair: speedometer odometer 1991 chev caprice classic, caprice classic, digital readout

Question

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Speedometer and odometer are not working. speed controll is working. any ideas?
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Is it a digital readout?

No not digital

Answer
Duh??? I know what your thinking, I should have known it was not digital. The most common problem is with the cable or the small plastic gear in the transmission that is easily accessible through the side of the transmission by removing a 3/8" bolt and small bracket (bolt may be 10mm)
If you replace the plastic gear, make sure its the right color as they are color coded for different gears.