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    4l60e no 1st or 4th, ez tcu

    I rebuilt my first 4l60e and installed in a 1994 gmc k1500. It has a 2500 stall converter and using a ez tcu to control it. I have no 1st or 4th. Starts out in second and shifts to third like normal in d or od. Torque converter locks up too. Just no 1st or 4th. I've replaced both shift...
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