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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6L50/6L80/6L90 - DTC P0973 To DTC P2764 >> DTC P1684, P1685 or P1686 >> Circuit/System Testing

Circuit/System Testing

  1. Clear the DTC and operate the vehicle under the condition for running and setting the DTC.
  2. Shut the ignition OFF for 30 seconds, and verify that the DTC does not reset.
    • If the DTC resets, replace the control solenoid (w/body and TCM) valve assembly.
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