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Thread: 2000 silverado speedo calab from 3.42 to 3.73

  1. #1

    Question 2000 silverado speedo calab from 3.42 to 3.73

    Hey guys im having issues programming my speedo to adjust going from 3.42 to 3.73. It shows it changed but driving the speedo is deff off! Changed it under engine and speedo. Any info is helpful!

  2. #2
    Advanced Tuner
    Join Date
    Apr 2015
    Posts
    302
    Post your tune and it will be easier to see what isn't right

  3. #3
    Advanced Tuner 96gt4.6's Avatar
    Join Date
    Aug 2008
    Location
    Kansas
    Posts
    489
    Follow these instructions for calculating your vss pulses/mile and trans tail revs/mile, or post your tune and tire sizes so we can help.

    http://www.hptuners.com/forum/showth...The-Fix-Thread
    '17 Whipple'd S550
    Too many other projects to list.....see my YouTube channel for more: https://www.youtube.com/channel/UCr7...-XfDG53sCh6tcw