1-2 shift

  1. B

    p1870 code after I replaced Valvebody. I need help and answers.

    97’ Gmc k1500 4l60e This is my first truck and I can’t afford to bring it into a shop. truck shot the p1870 code few months ago and had hard 1-2 shift, I then replaced TCC Valve with a fitzall part and all shift solenoids. it fixed my problem for a few months then the code showed up again. i...
    • bmw1997
    • Thread
    • #help 1-2 shift 4l60e p1870 transmission problem
    • Replies: 2
    • Forum: Transmissions
  2. R

    [Solved] 700r4 - Hard 1-2 shift, 2-3 light but not soft

    Hey guys, I have a 1991 GMC Sierra k2500. My transmission shifts pretty hard into second gear, and you can definitely feel it shift into 3rd but it's not anywhere near the 2nd gear shift. Everything after 3rd is fine. I have checked my TV cable. It's as tight as it can go, and when moving it...
    • ryanguy426
    • Thread
    • 1-2 shift 1991 350 4l60 700r4 gmc hard shift sierra
    • Replies: 4
    • Forum: Transmissions

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