Tachometer sticks/reads high

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D'Hag

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Nov 13, 2007
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SW Iowa
Can tach be replaced?

My '03 Tahoe's tachometer many times will not drop to zero when turning on the key and starting. Whatever point it is stuck at on start-up will be the "zero" point. So if the tach needle drops to 2500 rpm at start-up, it will read 2500 rpm high when running.

It used to do this only on really cold days, but now it's doing it almost all the time. Also, now the needle won't fall back down between gear shifts, until finally it up against the upper stop.

Is it possible to replace only the tach? Or is this one of those one-piece instrument clusters (dumb idea :whymewhyme:)? Or is there a cause somewhere else that can be fixed? I suspect the problem in inside the tach itself.

I doubt a dealer would honor any recall on this. The truck is now 9 years old and has about 100K miles on it.
 
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