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Thread: Speed calibrating correcting?

  1. #1
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    Speed calibrating correcting?

    2008 Colorado 2.9 auto

    Going from the factory wheel size of 215 70 15 to 255 70 16 and the speedometer is 7mph slower reading to actual mph.
    If ip cluster reads 50 mph the vehicle is actually going 57mph.

    Where is the setting to rectify the indifference?

    Thank you
    I have a burrito in my colon, yet refried beans come out...
    How i know it's from the same meal? I didn't ingest corn any other time.

  2. #2
    Tuning Addict 5FDP's Avatar
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    Does using the gear/tire wizard under the edit tab help?
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
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    im not seeing that option.
    I have a burrito in my colon, yet refried beans come out...
    How i know it's from the same meal? I didn't ingest corn any other time.

  4. #4
    Tuning Addict 5FDP's Avatar
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    Post the file.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  5. #5
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    doh I had the wrong file open. But why is that option not there for all gm dodge ford vehicles?

    Thanks 5FPD for the help. Now to fiddle with it.
    I have a burrito in my colon, yet refried beans come out...
    How i know it's from the same meal? I didn't ingest corn any other time.

  6. #6
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    now i can't save the file under the same vin I already licensed. What gives?
    I have a burrito in my colon, yet refried beans come out...
    How i know it's from the same meal? I didn't ingest corn any other time.