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Home >> GMC >> 2020 >> Acadia SL >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W M3V) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P08CA or P08CB >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC P2670, P2671 is not set.
    • Go to next step : If none of the DTCs are set 
  3. Engine Running
  4. Verify the scan tool parameter :
    • Transmission Control Solenoid Valve 11 Control Circuit Low Voltage Test Status = OK or Not Run
    • Transmission Control Solenoid Valve 11 Control Circuit High Voltage Test Status = OK or Not Run
    • If not the specified state 

      Refer to : Circuit/System Testing

    • Go to next step : If the specified state 
  5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.Verify the DTC does not set.
    • If the DTC sets 

      Refer to : Circuit/System Testing

    • Go to next step : If the DTC is not set 
  6. All OK.
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