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Old 07-22-2019, 03:11 PM   #1
70CHEVYBB
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speedometer calibration

i just put a 6" lift with 35's on my daughter 2002 yukon. whats the best way to calibrate the speedometer?
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Old 07-22-2019, 09:24 PM   #2
Palf70Step
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Re: speedometer calibration

Far as I know, the computer will have to be modified/flashed with the new info. I have never had to do it, so I haven't looked in my area to see ho does it.
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Old 07-30-2019, 01:24 AM   #3
hatzie
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Re: speedometer calibration

You have to change the PCM and the ABS computer to do it right.

I used HP Tuners on the PCM and my Tech 2 on the ABS computer. Details are in my build thread.
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