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Home >> Chevrolet >> 2010 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 46 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC P0572 or P0573 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Outlook, 2009 GMC Acadia, 2009 Chevrolet Traverse, and 2009 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connectors at the appropriate control modules listed below.
    • TCM module
    • ECM X1
  2. Connect a test lamp between the appropriate signal circuit terminal listed below and ground.
    • TCM terminal 16
    • ECM terminal 7
  3. Ignition ON, press and release the brake pedal. Verify the test lamp turns ON and OFF when pressing and releasing the brake pedal.
    • If the test lamp is always ON, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.
    • If the test lamp is always OFF, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  4. Ignition OFF, connect the harness connector at the ECM module.
  5. Connect a test lamp between the TCM signal circuit terminal 16 and ground.
  6. Ignition ON, press and release the brake pedal. Verify the test lamp turns ON and OFF when pressing and releasing the brake pedal.
    • If the test lamp is always OFF, test the signal circuit for an open/high resistance. If the circuit test normal, replace the ECM.
  7. If all circuits test normal, replace the TCM.
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