Chevy and GMC Duramax Diesel Forum banner

mid shift

  1. trans goes into neutral between 3-4 shift

    Transmission Shop
    Hi All, I have a 2005 gmc crew cab LLY with the 5 speed. I have been noticing that when under moderate acceleration, it shifts funny between 3-4 gear. It begins the shift and during mid-shift it is like it goes into neutral. The revs pick up to about 3k at moderate acceleration, then it shifts...