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Q: My tachometer stoped working what doyou think is wrong?
How can I fix it on 2003 Chevrolet Silverado 2500 HD

all other gauges work
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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.
Common problem. The fault lies in the instrument cluster. They can be repaired here: http://www.speedometerservice.com
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