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Discussion Starter · #1 ·
So I have an 07 nnbs silverado. Today on my way to work I look down at my tach which is reading 4500 RPM at 55MPH. Dafuq? I let off the gas and it goes down to 4000. I was two minutes from work so I get to work, shut the truck off and the tach stays at 3000 RPM. When I start the truck up it'll still have the gauge move but does not go any lower than 3000. I have never run into any issues with a cluster on an NNBS. Does anyone have any ideas as to what the issue is? Hoping cheap and easy but I'm expecting to have to pay for a new cluster.

Thanks for any help.
 
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