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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1572 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B1433 >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF, disconnect the X5 harness connector at the BCM.
  2. Test for greater than infinite resistance between the BCM ignition circuit terminal 13 and ground.
    • If less than specified, test for a short to ground.
  3. If the circuit tests normal, test or replace the BCM.
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