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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 424 (Automatic Transmission - 6T75 (M7V M7X) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0815, P0816, or P0826: Up and Down Shift Switch >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
    WARNING:

    Refer to Parking Brake and Drive Wheels Warning .

  1. Ignition ON, engine OFF, Transmission Shift Lever in the M or manual mode position.
  2. Verify the scan tool Up and Down Shift Switch or Driver Shift Request parameter displays Upshift when pressing the plus (+) switch, Downshift when pressing the minus (-) switch, and Inactive when neither switch is pressed.
    • If the parameter does not display the correct value 

      Refer to Circuit/System Testing

    • If the parameter displays the correct value 
  3. 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.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set. 
  5. All OK.
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