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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Automatic Transmission - VT40 (MRG) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0716, P0717, P07BF, or P07C0 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify the scan tool parameter: 9V Reference 1 Circuit Status = OK
    • If not the specified state 

      Refer to Circuit/System Testing

    • Go to next step: If the specified state 
  3. Engine - Running
  4. Transmission - Park
  5. Verify the scan tool parameter: Transmission Input Speed = Engine Speed± 100 RPM
    • If not the specified value 

      Refer to Circuit/System Testing

    • Go to next step: If the specified value 
  6. Block - Drive Wheels
  7. Apply & Hold - Brake Pedal
  8. Apply - Parking Brake
  9. Transmission - Reverse
  10. Verify the scan tool parameter: Transmission Input Speed = 0 RPM
    • If not the specified value 

      Refer to Circuit/System Testing

    • Go to next step: If the specified value 
  11. 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 
  12. All OK.