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Author Topic: MY speedometer is off  (Read 2404 times)

Offline Socal_GMC

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MY speedometer is off
« on: September 29, 2009, 11:23:38 pm »
My speedometer is off by 10mph. It reads to fast and has only happened since i replaced my trans. I have a 3/4 Gmc high sierra 25 with stock gearing with 33 inch tires. How can i fix this?
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Offline Lt.Del

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Re: MY speedometer is off
« Reply #1 on: September 30, 2009, 07:27:52 am »
re calibration.

go to nearly any shop and they can calibrate it for you....all it takes is to pull the speedo cable off the tail of the tranny and put a new plastic gear in it after they calculate which gear to use.

Call around to different shops and they'll tell you who can do it.  It'll cost about $40 or so.
« Last Edit: September 30, 2009, 07:29:26 am by SgtDel »
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Offline Captkaos

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Re: MY speedometer is off
« Reply #2 on: September 30, 2009, 10:43:57 am »
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Offline murraygmc

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  • 85 gmc 4x4
Re: MY speedometer is off
« Reply #3 on: September 30, 2009, 10:54:13 am »
good info!
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85 gmc high serria 4x4
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