all other gauges work
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2003 Chevrolet Silverado 2500 HD Question: My tachometer stoped working what doyou think is wrong? How can I fix it
PARTS GUY December 11, 2011, 18:04Master
Vehicle Application: 2003 Silverado 2500 HD 6.0
Customer Concern: Tachometer does not work right all the time, same with the speedometer.
Tests/Procedures: 1. Check the other gauges. If they also do not work right, check the data line and power/ground to the cluster.
2. If the other gauges are OK and the scanner shows good speed and RPM readings send the cluster out for testing.
Answer #2Mr. Whizard November 26, 2013, 07:10Enthusiast
Common problem. The fault lies in the instrument cluster. They can be repaired here: http://www.speedometerservice.com