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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 362 (Automatic Transmission - 6L80/6L90 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0711, P0712, or P0713 >> Circuit/System Verification

Circuit/System Verification

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  1. Engine idling at normal operating temperature, verify the scan tool Trans Fluid Temp. parameter is between -74 and +174°C (-101 and +345°F).
    • If not within the specified range, replace the Q8 control solenoid valve assembly.
  2. Operate the vehicle at 64 km/h (40 mph) for 10 minutes. Monitor the Transmission Fluid Temperature parameter and the TCM Temperature parameter with a scan tool. The Transmission Fluid Temperature parameter should increase by more than 2°C (3.5°F). Also, the Transmission Fluid Temperature parameter and the TCM Temperature parameter should be within 10°C (18°F) of each other.
    • If the Transmission Fluid Temperature parameter does not increase by more than 2°C (3.5°F) or the Transmission Fluid Temperature parameter is not within 10°C (18°F) of the TCM Temperature parameter, then replace the Q8 control solenoid valve assembly.
  3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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