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  1. #1

    Default Harsh Shift At Traffic Speeds

    i have harsh shift, first to second, in my silverado, at low speeds only, when crawling in traffic.
    somewhere somehow i saw a gm tsb on this, saying to recalibrate tcm for a different shifting mode. i even have it scheduled for tomorrow to be done.
    now, need other's opinion, before i go to stealership and they start pushing bull into my ears - has anyone had it done? did it work? because even when i just called to schedule, serviceman already started winding yarn into my ears - maybe there's something wrong with your trannie, yadee yadaa. i truely can't stand this, go to stealers only as a last resort.
    it's 2000, 1500, 4 wheel drive with automatic transfer case. once again, car generally behaves like a champ. only while at low speeds, in traffic, it'll produce noticeable kick shifting into second or downshifting into 1st. fluid mostly replaced and at perfect level. no error codes on scanner. i just feel bad about that harsh shift but would rather save a benjamine if recalibrating does not do much. i found that in bad traffic i can just push "tow/haul" button and it works much better, as far as i do not cross about 15mph.
    will appreciate

  2. #2

    Default Passed On It

    well, i passed on tcm twicking. listened to the voice, voice said - don't do it.
    like they say in the blessed lands of tennessee - don't fix it if it ain't brok. shift is not that bad, i do not want to mess them up trannie and get stuck with stealership. judging by the over the phone attitude, there would have been a lot of bull pushed into my ears, and i am quick fire on this.
    so, i passed. i think i can, actually, get one of them aftermarket modules to do the job myself, one that plugs into tcm and you can change shifting mode at will.

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