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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 510 (Engine Controls And Fuel - 3.6L (LLT) - DTC P0340 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0449, P0498, or P0499: Evaporative Emission (EVAP) Vent Solenoid Valve >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the control circuit status parameters listed below do not display Malfunction while commanding the EVAP Vent Solenoid Valve to ON (Not Venting) and OFF (Venting) with a scan tool:
    • EVAP Vent Solenoid Valve Control Circuit Open Test Status
    • EVAP Vent Solenoid Valve Control Circuit Low Voltage Test Status
    • EVAP Vent Solenoid Valve Control Circuit High Voltage Test Status
    • If Malfunction is displayed 

      Refer to Circuit/System Testing

    • If Malfunction is not displayed 
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing

    • If the DTC does not set 
  5. All OK.
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