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craig noel Posted on May 22, 2010
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The speedometer and tach perodicaly stop working. What could be the problem?

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Z71guy

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  • Posted on Oct 07, 2010
Z71guy
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Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Silverado instrument cluster repair

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  • Posted on Jun 04, 2010
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It's the stepper motors behind the gauges.They were made with plastic gears. GM covers these repairs to 7 years or 70,000 miles so check with your dealer first. If the coverage limit is up they usually charge 300-600 to repair/replace the cluster. There are many independent shops that repair these clusters for under 200. I had mine repaired at gmgaugerepair.webs.com They repair your cluster and have it back in the mail same-day for 125.

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  • Posted on May 22, 2010
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It could be your instrument cluster

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Both my speedometer and tachometer stopped working. My speedometer stopped working first and less than a minute later, the tach stopped as well. My code reader says speed sensor which makes sense, but what...

The speed sensor can be tested with a scanner. Only take 10 minutes, If it works then your instrument cluster took a dive. Same thing with the RPM. If the scanner sees it then the cluster is bad. Getting it diagnosed properly is your best bet. You can get the cluster rebuilt for alot less than new. modulemaster.com does them.
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Had same problem, so I brought it to the dealership. They said there mechanic cleaned the contacts/leads on the console cluster, Speedo or tach have not failed since. It's been about 6 weeks so far!
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