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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 P2534 >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF, disconnect the X176 24-way harness connector at the transmission, then the X1 16-way harness connector at the transmission, verify that a test lamp does not illuminate between the ignition voltage circuit terminal 12 and ground.
    • If the test lamp illuminates, test the ignition voltage circuit for a short to voltage.
  2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal 12 and ground.
    • If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance.
    • If the circuit tests normal replace the Q8 control solenoid valve assembly.
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