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

all other gauges work

by in Lyndhurst, NJ on December 11, 2011
2 answers
ANSWER by on December 11, 2011
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.
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ANSWER by on November 26, 2013
Common problem. The fault lies in the instrument cluster. They can be repaired here: http://www.speedometerservice.com