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Home >> GMC >> 2021 >> Acadia AT4 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P1761 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following component/system: Serial Data
    • Go to next step: If a related DTC is not set 
  3. Clear the DTCs.
  4. Operate the vehicle within the Conditions for Running the DTC.

    Verify the DTC does not set.

    • If the DTC sets 
    1. Ignition/Vehicle - Off
    2. Replace the component: K9 Body Control Module
    3. Operate the vehicle within the Conditions for Running the DTC.
    4. Verify the DTC does not set.
      • If the DTC sets - Replace the component: K71 Transmission Control Module
      • Go to next step: If the DTC is not set
    5. All OK.
    • Go to next step: If the DTC is not set 
  5. All OK.
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