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  1. 4L60E Screeching in Manual 3/2/1

    Transmission - Rearend
    I've been searching with zero luck for days on this one. It seems there are some experienced 4L60 mechanics here so I thought I'd ask and see what turns up. Vehicle is a 2000 GMC Jimmy 4x4 with the 4 button "soccer mom" auto 4wd. I'm currently sorting out issues with that, but believe my...