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Home >> Cadillac >> 2020 >> XT6 Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Programming And Setup) >> Repair Instructions >> Control Solenoid Valve and Transmission Control Module Assembly Programming and Setup (6L80 (MYC) or 6L90 (MYD)) >> TCM Reprogramming
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TCM Reprogramming

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2020 GMC Yukon XL, 2020 GMC Yukon, 2020 Chevrolet Tahoe, 2020 Chevrolet Suburban, and 2020 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
  1. If the TCM needs to be reprogrammed, refer to Service Programming System (SPS) .
  2. Perform the Reset Transmission Adapts - Refer to Reset Transmission Adapts .
    3. NOTE:

    After programming, perform the following to avoid future misdiagnosis:

  3. Turn the ignition OFF for 30 seconds.
  4. Turn the ignition ON with the engine OFF.
  5. Use the scan tool in order to retrieve history DTCs from all modules.
  6. Clear all history DTCs.
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