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- The 99-06 GMT800 Chevy and GMC Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=58)

- - speedometer calibration (https://67-72chevytrucks.com/vboard/showthread.php?t=790638)

70CHEVYBB

07-22-2019 03:11 PM

speedometer calibration

i just put a 6" lift with 35's on my daughter 2002 yukon. whats the best way to calibrate the speedometer?

Palf70Step

07-22-2019 09:24 PM

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.

hatzie

07-30-2019 01:24 AM

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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