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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0971 >> DTC P0796 or P0797 >> Circuit/System Verification

Circuit/System Verification

  1. Perform the Transmission Fluid Check .
  2. Turn ON the ignition, with the engine OFF.
    3. IMPORTANT: Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records.
  3. Record the DTC Freeze Frame and Failure Records.
  4. Clear the DTC.
  5. Operate the vehicle in DRIVE with the calculated throttle position greater than 15 percent to obtain 72 km/h (45 mph) and achieve 5th gear. Perform this maneuver 2 times.
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