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Thread: 4L60E Transmission Torque Reduction during WOT

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  1. July 24th, 2021 #6
    recrit
    recrit is offline
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    I'm going to set it back to 0 sec to confirm that this issue occurs again. I'll post the results.

    - PCM: GM LS1B: Service 12586243, HW 12583659, other numbers: 12587670, YFXJ. However, this is not the original stock PCM. The original got bricked so I got this one off of eBay with the same service #12586243.
    - year/model/vehicle: 2004 GTO
    - Base OS: 12587604

    Transmission: 4L60E PerformaBuilt with their custom shift kit
    Last edited by recrit; July 24th, 2021 at 04:57 AM.
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