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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1370 (Automatic Transmission - 4L60-E - DTC P0218 To DTC P2771) >> DTC P2769 or P2770 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using the J 44152  and the J 35616  , measure the resistance between the ignition 1 voltage circuit and the TCC Solenoid valve circuit. The resistance should be between 21-33 ohms for the TCC Solenoid valve.
    • If the resistance is not within the specified range, remove the affected solenoid.
  2. Disconnect the wiring harness connector from the affected solenoid. Measure the resistance of the affected control circuit. The resistance should be between 21-33 ohms for the TCC Solenoid valve.
    • If the resistance is not within the specified range, replace the affected solenoid.
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