Allison / Speedometer calibration for 35" tires

Discussion in 'General RVing' started by chevy81allison, Aug 20, 2003.

  1. chevy81allison

    chevy81allison New Member

    I have 35" tires on my chevy 2500HD and cannot find any info on how to correctly recalibrate my speedo and TCM. Am I stuck with regearing my truck?

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