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Thread: Scaning 4l60.

  1. #1
    Advanced Tuner =fast='s Avatar
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    Scaning 4l60.

    I'm trying to see if the scanner can tell me if my shift selenoids are mess up.

    My tranny wont shift to 3rd.

  2. #2
    Tuner in Training
    Join Date
    Oct 2011
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    just started this all of a sudden? no dtcs? usually if its a solenoid issue a dtc will be thrown

  3. #3
    Advanced Tuner
    Join Date
    Apr 2009
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    There are 2 solenoid used for upshifts 1-2 and 2-3

    1st is on,on
    2nd is off, on
    3rd is off, off
    4th is on, off

    The scanner can log trans data and has controls to command
    1997 Trans Am WS6 - LS1 swap - TR224 - Pacesetter Longtubes - Yank SS3600
    - 3.42 Moser 12 bolt - Wilwood Brakes - HP Tuners tuned - P1SC-1 Procharger

  4. #4
    Advanced Tuner =fast='s Avatar
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    Quote Originally Posted by duramaxecb View Post
    just started this all of a sudden? no dtcs? usually if its a solenoid issue a dtc will be thrown
    No dtc show up.

    The truck sitt down around 2 months after rebuilding the tranny, i was reppining the computer since it had a 98 pcm, upgraded to a 0411 (2001)pcm.

    It drives good i been feeling whenever the truck warms up to normal coolant level it takes long to shift, at WOT it dont shift to 3rd i have to let offf the gas to shift i though it could be on the tuning, but i was going around 60mph and i try to pass a car and the tranny just slip.