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Thread: 2002 GMC 4wd low help

  1. #1
    Potential Tuner
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    Mar 2023
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    2002 GMC 4wd low help

    my set up is a 2002 gmc 5.3l 4l65e 4wd installed into a rock bouncer Im using a Bp automotive standalone harness with a 4-speed transfer case 2.72 crawl box with np205 transfer case 1.98 I have the 4wd tables and have bent adjusting them to see if I can make it shift in at least. the 2.72 crawl box which is the factory transfer case ratio. The vss sensor is in the trail shaft using Behemoth drive train output vss kit with 40 teeth relucter. I have ground the checked pin 16 gray/black wire it not working any help would be appreciated Tune 2.hpt

  2. #2
    Tuner mjc79's Avatar
    Join Date
    Oct 2020
    Location
    Kansas
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    78
    Try and change the "PRNDL Equipped" in Transmission>General>Configuration - from None to the stock PRNDL and see if that helps any
    02 Tahoe, Rebuilt 5.3, PRC 2.5 heads, BTR Stg2 V2 cam, 50lb Injectors, Speed Engineering LT's, Offroad Y, Magnaflow catback, Built 4L60, NP241 swap etc etc...

  3. #3
    Potential Tuner
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    Mar 2023
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    okay will do thanks