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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 250 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0971) >> DTC P0667, P0668, or P0669 >> Circuit/System Testing

Circuit/System Testing

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