LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2016 >> Terrain SL, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission - 6T70 (M7U M7W) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0815, P0816, or P0826: Upshift Switch Circuit/Downshift Switch Circuit/Up and Down Shift Switch Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
    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.
scientia non olet · About LEMON Manuals