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Old 08-04-2009, 08:25 AM   #1
deyomatic
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Speedometer Question...Tire size

I've got an '05 GMC Sierra that needs new tires. I've tossed around the idea of putting on slightly shorter tires to give the 4.3 a smidge more of a torquey feeling. What is involved in making the speedo read correctly if I do that? In the old days you could just swap out the plastic gear but I have a feeling this one involves computers and such.

Thanks.
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Old 08-05-2009, 11:43 AM   #2
Boog
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Re: Speedometer Question...Tire size

I believe you will have to go to the dealer or find a shop with the tool as it's done electrically.
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Old 08-05-2009, 03:02 PM   #3
deyomatic
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Re: Speedometer Question...Tire size

That's what I figured. Thanks.
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