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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 P2723 or P2724 >> 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.
  4. Record the DTC Freeze Frame and Failure Records.
  5. Clear the DTC.
  6. 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.