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Home >> GMC >> 2011 >> Yukon Base, 5.3 3 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Automatic Transmission - 2ML70 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0562 or P0563 >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF, disconnect the X1 Q8 control solenoid assembly harness connector at the transmission.
  2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuits listed below and ground.
    • Terminal 4
    • Terminal 12
      • If the test lamp does not illuminate, test the ignition circuit for a Short to Ground or an Open/High Resistance.
  3. If all circuits test normal, replace the Q8 control solenoid valve assembly.
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