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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 P2762, P2763, or P2764 >> Circuit/System Testing

Circuit/System Testing

  1. Ensure the transmission fluid temperature is between 50-80°C (122-176°F).
  2. Operate the vehicle in 2nd gear long enough to ensure at least a 3°C (5°F) rise in TCM temperature, then operate the vehicle to ensure TCC engagement for 5 seconds.
  3. Observe the scan tool data parameter TCC PC Sol. CKT Status, the parameter should display OK.