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Tach Stopped Working And Is Reading Wrong

Gripenfelter

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Gripenfelter Enthusiast

Gripenfelter

Posted
Posted

2003 Yukon Denali

 

The tach sits at 2000 rpm when the truck is off and if I accelerate past 2000 it sometimes freezes at the higher rpm.

 

Sometimes I turn on the truck an it's sitiing at 4000 rpm and I accelerate normally and the gauge pegs out at 6000 rpm.

 

Bottom line: Gauge is always wrong.

 

I also noticed a similar problem with the volt meter as well. Sometimes shows 9 volts while my aftermarket one is showing 13.6 volts.

 

Do I need a new dash? Is there a cheap fix?

jrrod2004 Senior Enthusiast

jrrod2004

Posted
Posted
2003 Yukon Denali

 

The tach sits at 2000 rpm when the truck is off and if I accelerate past 2000 it sometimes freezes at the higher rpm.

 

Sometimes I turn on the truck an it's sitiing at 4000 rpm and I accelerate normally and the gauge pegs out at 6000 rpm.

 

Bottom line: Gauge is always wrong.

 

I also noticed a similar problem with the volt meter as well. Sometimes shows 9 volts while my aftermarket one is showing 13.6 volts.

 

Do I need a new dash? Is there a cheap fix?

 

 

possibly on the new dash...but if you can get the stepper motors fixed, it might be cheaper...

Gripenfelter Enthusiast

Gripenfelter

Posted
  • Author
Posted

Ok it seems to work fine during the day and at night or as it gets cooler the tach starts to read high and get stuck and the volt meter reads low and is also wrong.

txab Senior Enthusiast

txab

Posted
Posted
you can buy a new display on ebay, i've seen them on there.

 

Or send yours off for repair.

MarkD Senior Enthusiast

MarkD

Posted
Posted

If you have less than 100 k miles, I would ask the dealer to replace it under recall. If over 100k miles (like me) order one. I got mine here!

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