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Thread: tranny issues help please

  1. #1
    Join Date
    Dec 2009
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    merced
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    Question tranny issues help please

    hey everyone i just bought a 1999 classic and it takes forever to shift out of first. any suggestions on whats wrong or how to fix it?
    1999 chevy classic z71 straight piped and built tranny rigged intake and jet performance module

  2. #2
    Join Date
    Apr 2008
    Location
    Woodstock, CT
    Posts
    26
    how many miles on it? im sure the fluid is dirty as hell, could use a tranny flush or may need a rebuild

    1999 RCSB, 4X4, 260k miles, LQ9, XER281HR cam, port+polis+shaved LS1 heads, LS6 intake, VHR tune, Manthorne Motorsports 4L60E Transmission, SLP Und-Pulley, Camaro E-fans, Yank TB4000 converter

    http://www.manthornemotorsports.com

  3. #3
    Join Date
    Dec 2009
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    it has 200,000 but idk if its been rebult but the fluid looks clean
    1999 chevy classic z71 straight piped and built tranny rigged intake and jet performance module

  4. #4
    Join Date
    Dec 2007
    Location
    College Station, TX
    Posts
    1,464
    do the flush for sure...go from there

  5. #5
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    Dec 2009
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    I had a flush done and it didnt do anything any more ideas?
    1999 chevy classic z71 straight piped and built tranny rigged intake and jet performance module

  6. #6
    Join Date
    Feb 2010
    Location
    washington
    Posts
    309
    knowing the tranny its probaly in need of a rebuild. if u have a program such as hp tunners u can go in and monitor the tranny shift signals and help determin whats really going on.

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