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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1371 (Automatic Transmission - 6L80/6L90 - DTC P0218 To DTC P0963) >> DTC P06AC, P06AD, or P06AE >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start the engine for 1 minute and observe the TCM power up temperature sensor and the TCM temperature sensor.
  2. The system is operating normally if the TCM power up temperature is within 10°C (18°F) of the TCM temperature sensor.
  3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.