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Home >> GMC >> 2020 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Automatic Transmission - 6T40 (MNH) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2762, P2763, or P2764 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2020 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle - Off
  2. Remove the component : Q8 Control Solenoid Valve Assembly

    Verify the following conditions do not exist : Contamination with metallic debris

    • If a condition exists 

      Repair or replace as necessary.

    • Go to next step : If no condition exists 
  3. Verify the resistance is within the specified range for each solenoid valve. - Refer to : Control Solenoid Valve and Transmission Control Module Assembly Inspection 
    • If the resistance is not within range 

      Replace the component : Q8 Control Solenoid Valve Assembly

    • Go to next step : If the resistance is within range 
  4. Install - DT-48616-10 Adapter Harness @ Q8 Control Solenoid Valve Assembly & Vehicle wiring harness X1
  5. Connect the electrical connector : B15 Transmission Internal Mode Switch
  6. Ignition - On / Vehicle - In Service Mode
  7. Perform the scan tool control function : TCC Pressure Control Solenoid Valve - On and Off

    Verify the scan tool parameter :

    • TCC Pressure Control Solenoid Valve Control Circuit High Voltage Test Status = OK or Not Run
    • TCC Pressure Control Solenoid Valve Control Circuit Low Voltage Test Status = OK or Not Run
    • TCC Pressure Control Solenoid Valve Control Circuit Status = OK or Not Run
    • If not the specified state 

      Replace the component : Q8 Control Solenoid Valve Assembly

    • Go to next step : If the specified state 
  8. All OK.