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  1. XTS TCM reprogram after transmission change

    Cadillac XTS Forum 2013-2019
    I have a 2014 Cadillac XTS luxury series, and I recently bought a transmission from LKQ with 60K miles which belong to a 2013 Cadillac XTS. Right after I pick up the car my check engine came up, I check it with OBDII, and it was U0101, but the car is running perfect, not stucking in any gear. I...