LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2021 >> Terrain SLE, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0707, P0708, P2802, P2803, or P2805 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2020 GMC Terrain and 2020 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC P2805 is not set.
    • If the DTC is set 

      Replace the component: B15 Transmission Internal Mode Switch

    • Go to next step: If the DTC is not set 
  3. Verify DTC P0641, P0651, P0697, P06A3 is not set.
    • Go to next step: If no DTC is set 
  4. Verify the condition does not exist: Incorrect adjustment - Refer to: Range Selector Lever Cable Adjustment
    • If a condition exists 

      Repair or replace as necessary.

    • Go to next step: If no condition exists 
  5. Operate the component: S3 Transmission Shift Lever - Select each position

    Verify the scan tool parameter: Transmission Range Sensor 1, 2 = The value should be within the range listed in the table: Transmission Range Sensor Duty Cycles

    • If not in the specified range 

      Refer to: Circuit/System Testing

    • Go to next step: If in the specified range 
  6. 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 
  7. All OK.
scientia non olet · About LEMON Manuals