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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1360 (Wiring Systems And Power Management - DTC B0005 To DTC B1475) >> DTC B0005 >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF, disconnect the park enable PCB relay.
  2. Connect a test lamp between the park enable signal circuit and battery positive voltage.
  3. Ignition ON, transmission in PARK, verify the test lamp does not illuminate.
    • If the test lamp illuminates, test for a short to ground on the park enable signal circuit. If the circuit tests normal and the DTC is current, replace the BCM.
  4. If the circuit tests normal and the DTC is current, test or replace the park enable PCB relay.
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