2008 chevy silverado 3500 with duramax engine and speedometer, tach and volt metter pegs out. vehicle runs good otherwise. any ideas what would cause this condition

Asked by Sep 30, 2013 at 08:58 PM about the 2007 Chevrolet Silverado Classic 3500 LT1 Crew Cab 4WD

Question type: Maintenance & Repair

when driving at highway speed of about 70 mph the speedometer, tachometer and volt meter pegs out and vehicle runs normal.  any idea what could cause this condition

Thank You

3 Answers


Could be a bad ground for the cluster, but I think it may be in the charging system controls, if I remember correctly they are controlled by the ECM on this truck.


huey1948, I am sorry to hear you are having this concern. You can certainly email us at socialmedia@gm.com if you would like to discuss this further. We look forward to hearing from you. Erica Tiffany GM Customer Care


Hello, This is a very common problem on the 03-07(classic) Silverados. The problem is your gauges are malfunctioning and the instrument cluster needs to be rebuilt. Check out www.drspeedometer.com for more info and pricing on a repair. www.drspeedometer.com

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