Results 1 to 3 of 3

Thread: ABS light after gear change in 4WD truck

  1. #1
    Potential Tuner
    Join Date
    Feb 2018
    Posts
    2

    ABS light after gear change in 4WD truck

    i am looking into purchasing VCM Suite and upcoming gear changes will drive this purchase. After a gear change, will updating the gear ratio in the PCM and/or TCM keep the ABS light from going on. I contacted HP Tuners direct and they told me to look in the forum. I did a search and could not find this information. Thank you for any help that can be provided.

  2. #2
    Advanced Tuner
    Join Date
    Feb 2016
    Location
    Texas
    Posts
    534
    All depends on the percentage correction needed from the gear swap. You should be able to change the gear ratio in the tune and fine tune your Speedo if needed and that should take care of it.
    97 ext cab short bed silverado 5.7 411 swap, edelbrock 29135 intake, lightly ported 906 heads milled .035 thou. factory press in rocker studs & rockers, comp 787 retainers & stock locks, ls6 springs. Comp cams 08-503-8 T56 swap

    86 SWB crate vortec 5.7/th350 The wife's truck

  3. #3
    Senior Tuner mbray01's Avatar
    Join Date
    Dec 2013
    Location
    Slidell, La.
    Posts
    1,015
    depending on year, there is an abs output calibration that needs to be adjusted, to correct the front to rear abs difference.
    Michael Bray
    Rusty Knuckle Garage
    Slidell, Louisiana
    20yr Master Tech.
    Advanced Level Specialist
    Custom Car Fabrication, Customization, High Performance.
    GM World Class Technician
    Shop Owner