Speed Guage

The fault is probably with the speedometer itself in the gauges cluster of your 2003 Chevrolet Silverado.. GM has extended the warranty on some of these clusters to check with your local Chevrolet dealer to see if yours is covered.

This is very common on the 03-06 Silverados. The cause is the motors behind the gauges are failing, they all go out eventually. You can get it repaired here - www.drspeedometer.com and there's a DIY guide here - www.howtorepairmyinstrumentcluster.com