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line pressure

  1. 4L60E no change in line pressure

    Transmission - Rearend
    Hey guys, my buddy and I just rebuilt my 4L60E out of a 1999 tahoe. After reinstalling everything we finally put it in gear. Reverse first,not much movement... thinking there is air in the system we drove around for about 20 min. Still no power in reverse, just slipping. We hooked up a scantool...