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Thread: VCM controls not working

  1. #1
    Tuner 01 MidMet WS6's Avatar
    Join Date
    Jun 2007
    Location
    St Paul, MN
    Posts
    169

    VCM controls not working

    I am heading to the dyno tomorrow and just relized I have never attempted to use the VCM controls on my truck. I would like to hold it in 3rd and lock the converter but it will not allow me to do so. The tab turns green and it will lock the converter but as soon as I roll into the throttle it will unlock. Truck is a 00 Silverado with a 2 bar SD setup and a swapped 4L80. When I last dynoed the truck it had the 4L60 and it would hold 3rd gear when commanded. I know it is late notice but if anyone has any suggestions I would love to hear them. If I can't get the VCM editor to work I will have to write it into the tune to lock the converter and not allow it to downshift???

    Thanks in advance for any input!!
    01 WS6-M6, PRC Stage 2.5 5.3's, MS4, Kooks 1 3/4", custom built full true duals w/ X-pipe, SLP lid, tuned via HPTuners

  2. #2
    Tuner in Training
    Join Date
    Mar 2008
    Posts
    28
    i had a 2000 trans am do the same thing today