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  1. #1

    Default 4L80E trans test port

    hi guys i have a 1999 GMC K3500 t ton with a 4L80E tranny and want to put a trans temp gauge on it and am wondering whar the pressure test port is on a 4l80E thanks or the help

  2. #2


    i foind it the test port is just above the shifter on the drivers side on the tranny just like my old 4L60E had thanks tho

  3. #3
    Legend unplugged's Avatar
    Join Date
    Sep 2006
    High Deserts of SoCal


    If you have time, could you take some pics of the job and post them in the how to section with a short write up? Thanks for sharing the info.
    There is no way to happiness....happiness is the way.:yipi:  _vXMYypuKMJFw671uF2ZPhjez_j-atRmcjM2zQKpQi1JSsB75/burb1.JPG
    High Desert SoCal
    93 K1500 burb (personal) 350 AT 3" Lift 250K+
    02 Honda Civic LX
    Looking for a 1990's Miata for an engine swap

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