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Thread: ABS/Track control/ Brake light on after tire change

  1. #1
    Potential Tuner
    Join Date
    Sep 2016
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    ABS/Track control/ Brake light on after tire change

    IS there a way to get my lights to not come on anymore.

    Went from factory 275/40/17 (approx 26") to 295/55/15 (28")

    Front and rear tires are VERY similar in size height wise.

    I used HP to adjust speedo for tire sizes change. MY local show tried to use a Tech II to see if they were able to adjust anything and could not find anything.

    LEt me know Thanks

  2. #2
    Can't do much without knowing what code is setting but i'm sure its front/rear speed mismatch. Hp tuners can't do anything with the ABS module.

  3. #3
    Potential Tuner
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    Sep 2019
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    Jeff, Do you know any other tuners or other way to modify abs settings? I need to change the rear wheel speed sensors on a 2013 camaro from 38 pulses per revolution to 55 pulses per revolution. Want to scale the pulses per wheel rev in the EBCM if ppossible. I am removing the IRS and replacing with a solid axle.

  4. #4
    Advanced Tuner mbray01's Avatar
    Join Date
    Dec 2013
    Location
    Pearl River, La.
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    611
    Some ecus have an abs output that is specifically for this issue. It is under the speedometer calibration tab
    Michael Bray
    Rusty Knuckle Garage
    Slidell, Louisiana
    15yr Master Tech.
    Custom Car Fabrication, Customization, High Performance.
    GM World Class Technician
    Shop Owner

  5. #5
    Advanced Tuner
    Join Date
    Apr 2017
    Location
    Meridian MS
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    433
    In the Tech2, look at:
    Chassis > ABS/TCS/VSES > Special Functions > Tire Size Calibration.

    screenshot.17-12-2018 23.42.59.png

    Downside is you can only choose from a predefined list, and it's in 'Pxxx/yyRzz' format, you have to work backwards to find a size with the diameter you need. And the sizes in the list cover a certain range, you can't input the size you want directly.

  6. #6
    Potential Tuner
    Join Date
    Aug 2016
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    1
    Quote Originally Posted by mbray01 View Post
    Some ecus have an abs output that is specifically for this issue. It is under the speedometer calibration tab
    Which way to start if larger Dia tire was installed?